Add line continuation for script to work w/ py2.7.5
Add line continuation for script to work w/ py2.7.5

Error was -

$ SPARK_HOME=$PWD/dist ./dev/create-release/generate-changelist.py
  File "./dev/create-release/generate-changelist.py", line 128
    if day < SPARK_REPO_CHANGE_DATE1 or
                                      ^
SyntaxError: invalid syntax

Author: Matthew Farrellee <matt@redhat.com>

Closes #2139 from mattf/master-fix-generate-changelist.py-0 and squashes the following commits:

6b3a900 [Matthew Farrellee] Add line continuation for script to work w/ py2.7.5

dbtsai/spark,cloud-fan/spark,ueshin/apache-spark,tejasapatil/spark,shuangshuangwang/spark,yanboliang/spark,JerryLead/spark,huang1900/spark,andrewor14/spark,SnappyDataInc/spark,Aegeaner/spark,darionyaphet/spark,patrick-nicholson/spark,ahnqirage/spark,alunarbeach/spark,ddna1021/spark,publicRoman/spark,LantaoJin/spark,jlopezmalla/spark,mzl9039/spark,nilsgrabbert/spark,SHASHANKB/spark,kimoonkim/spark,jlopezmalla/spark,saltstar/spark,eyalfa/spark,kissmetrics/spark,michalsenkyr/spark,poffuomo/spark,rezasafi/spark,kiszk/spark,debugger87/spark,ahnqirage/spark,yanboliang/spark,goldmedal/spark,poffuomo/spark,jrshust/spark,narahari92/spark,zero323/spark,xflin/spark,liyichao/spark,aray/spark,wangmiao1981/spark,minixalpha/spark,huang1900/spark,yanboliang/spark,aokolnychyi/spark,shaneknapp/spark,andrewor14/spark,UndeadBaneGitHub/spark,ioana-delaney/spark,facaiy/spark,jiangxb1987/spark,esi-mineset/spark,aosagie/spark,ron8hu/spark,tengpeng/spark,dhruve/spark,shubhamchopra/spark,WindCanDie/spark,ConeyLiu/spark,darionyaphet/spark,ajaysaini725/spark,chuckchen/spark,szhem/spark,cin/spark,highfei2011/spark,vinodkc/spark,facaiy/spark,witgo/spark,rednaxelafx/apache-spark,icexelloss/spark,liutang123/spark,michalsenkyr/spark,janewangfb/spark,apache/spark,tejasapatil/spark,HyukjinKwon/spark,metamx/spark,poffuomo/spark,jianran/spark,aosagie/spark,xuanyuanking/spark,ericvandenbergfb/spark,holdenk/spark,gioenn/xSpark,WindCanDie/spark,ConeyLiu/spark,yanboliang/spark,mzl9039/spark,jlopezmalla/spark,facaiy/spark,kiszk/spark,saltstar/spark,tejasapatil/spark,markhamstra/spark,aray/spark,ron8hu/spark,nilsgrabbert/spark,markhamstra/spark,dongjoon-hyun/spark,hhbyyh/spark,techaddict/spark,BryanCutler/spark,saturday-shi/spark,setjet/spark,narahari92/spark,darionyaphet/spark,vinodkc/spark,jrshust/spark,esi-mineset/spark,patrick-nicholson/spark,witgo/spark,shuangshuangwang/spark,jiangxb1987/spark,minixalpha/spark,SnappyDataInc/spark,aray/spark,someorz/spark,ioana-delaney/spark,jkbradley/spark,rednaxelafx/apache-spark,metamx/spark,witgo/spark,gengliangwang/spark,esi-mineset/spark,SnappyDataInc/spark,andrewor14/iolap,wzhfy/spark,pgandhi999/spark,nlalevee/spark,jlopezmalla/spark,zzcclp/spark,bravo-zhang/spark,srowen/spark,sahilTakiar/spark,apache-spark-on-k8s/spark,michalsenkyr/spark,liyichao/spark,saltstar/spark,1haodian/spark,lxsmnv/spark,liyichao/spark,patrick-nicholson/spark,rednaxelafx/apache-spark,nlalevee/spark,MLnick/spark,sureshthalamati/spark,dhruve/spark,milliman/spark,mdespriee/spark,akopich/spark,someorz/spark,szhem/spark,kimoonkim/spark,mike0sv/spark,sachintyagi22/spark,kevinyu98/spark,janewangfb/spark,nlalevee/spark,ueshin/apache-spark,haowu80s/spark,loneknightpy/spark,bravo-zhang/spark,spark-test/spark,sachintyagi22/spark,nchammas/spark,rezasafi/spark,liutang123/spark,ptkool/spark,map222/spark,lvdongr/spark,shubhamchopra/spark,liyichao/spark,tejasapatil/spark,WeichenXu123/spark,gengliangwang/spark,icexelloss/spark,caneGuy/spark,vinodkc/spark,brad-kaiser/spark,hvanhovell/spark,zuotingbing/spark,aosagie/spark,matthewfranglen/spark,gioenn/xSpark,adrian-ionescu/apache-spark,hhbyyh/spark,minixalpha/spark,tejasapatil/spark,metamx/spark,saturday-shi/spark,rekhajoshm/spark,actuaryzhang/spark,aokolnychyi/spark,ibm-research-ireland/sparkoscope,ron8hu/spark,aosagie/spark,akopich/spark,mike0sv/spark,caneGuy/spark,Panos-Bletsos/spark-cost-model-optimizer,publicRoman/spark,loneknightpy/spark,rezasafi/spark,rezasafi/spark,patrick-nicholson/spark,zhouyejoe/spark,SHASHANKB/spark,zzcclp/spark,icexelloss/spark,markhamstra/spark,poffuomo/spark,sachintyagi22/spark,xuanyuanking/spark,sachintyagi22/spark,stanzhai/spark,Aegeaner/spark,someorz/spark,stanzhai/spark,setjet/spark,mzl9039/spark,mdespriee/spark,rikima/spark,someorz/spark,huang1900/spark,xflin/spark,xuanyuanking/spark,hhbyyh/spark,zero323/spark,brad-kaiser/spark,narahari92/spark,JoshRosen/spark,jianran/spark,andrewor14/iolap,1haodian/spark,debugger87/spark,icexelloss/spark,rekhajoshm/spark,liutang123/spark,skonto/spark,wangyum/spark,saturday-shi/spark,debugger87/spark,nchammas/spark,joseph-torres/spark,cloud-fan/spark,caneGuy/spark,Aegeaner/spark,ahnqirage/spark,BryanCutler/spark,lxsmnv/spark,taroplus/spark,poffuomo/spark,SHASHANKB/spark,darionyaphet/spark,lvdongr/spark,jrshust/spark,ddna1021/spark,mzl9039/spark,skonto/spark,SnappyDataInc/spark,maropu/spark,aosagie/spark,huang1900/spark,shaneknapp/spark,panfengfeng/spark,WindCanDie/spark,1haodian/spark,mzl9039/spark,SHASHANKB/spark,markhamstra/spark,metamx/spark,apache-spark-on-k8s/spark,liyichao/spark,apache/spark,aosagie/spark,liutang123/spark,bdrillard/spark,Aegeaner/spark,pronix/spark,pgandhi999/spark,setjet/spark,nilsgrabbert/spark,dbtsai/spark,shubhamchopra/spark,dbtsai/spark,someorz/spark,1haodian/spark,techaddict/spark,ron8hu/spark,cloud-fan/spark,setjet/spark,HyukjinKwon/spark,liutang123/spark,srowen/spark,alunarbeach/spark,cloud-fan/spark,LantaoJin/spark,mahak/spark,lvdongr/spark,mike0sv/spark,loneknightpy/spark,wangmiao1981/spark,maropu/spark,jlopezmalla/spark,facaiy/spark,facaiy/spark,mdespriee/spark,tejasapatil/spark,mzl9039/spark,ioana-delaney/spark,maropu/spark,big-pegasus/spark,zero323/spark,adrian-ionescu/apache-spark,akopich/spark,jkbradley/spark,esi-mineset/spark,BryanCutler/spark,minixalpha/spark,goldmedal/spark,WeichenXu123/spark,panfengfeng/spark,zero323/spark,MLnick/spark,rezasafi/spark,Aegeaner/spark,gengliangwang/spark,UndeadBaneGitHub/spark,SnappyDataInc/spark,srowen/spark,kimoonkim/spark,pgandhi999/spark,byakuinss/spark,pgandhi999/spark,michalsenkyr/spark,apache/spark,WeichenXu123/spark,aokolnychyi/spark,ddna1021/spark,narahari92/spark,bOOm-X/spark,gengliangwang/spark,MLnick/spark,panfengfeng/spark,ron8hu/spark,zero323/spark,ahnqirage/spark,hhbyyh/spark,bOOm-X/spark,xflin/spark,WeichenXu123/spark,bdrillard/spark,holdenk/spark,facaiy/spark,tengpeng/spark,actuaryzhang/spark,chuckchen/spark,spark-test/spark,debugger87/spark,wangmiao1981/spark,loneknightpy/spark,ueshin/apache-spark,HyukjinKwon/spark,caneGuy/spark,shuangshuangwang/spark,LantaoJin/spark,brad-kaiser/spark,spark-test/spark,taroplus/spark,rezasafi/spark,kimoonkim/spark,zhouyejoe/spark,guoxiaolongzte/spark,ueshin/apache-spark,kissmetrics/spark,ConeyLiu/spark,joseph-torres/spark,gioenn/xSpark,UndeadBaneGitHub/spark,techaddict/spark,nchammas/spark,byakuinss/spark,rikima/spark,zuotingbing/spark,holdenk/spark,alunarbeach/spark,xuanyuanking/spark,mike0sv/spark,zhouyejoe/spark,skonto/spark,dbtsai/spark,kiszk/spark,zzcclp/spark,ptkool/spark,panfengfeng/spark,kimoonkim/spark,apache-spark-on-k8s/spark,saturday-shi/spark,darionyaphet/spark,wangyum/spark,zzcclp/spark,gioenn/xSpark,ddna1021/spark,UndeadBaneGitHub/spark,actuaryzhang/spark,rednaxelafx/apache-spark,andrewor14/iolap,mahak/spark,WindCanDie/spark,someorz/spark,ericvandenbergfb/spark,patrick-nicholson/spark,rednaxelafx/apache-spark,ericvandenbergfb/spark,Panos-Bletsos/spark-cost-model-optimizer,actuaryzhang/spark,kevinyu98/spark,jiangxb1987/spark,ptkool/spark,jianran/spark,BryanCutler/spark,shuangshuangwang/spark,ConeyLiu/spark,byakuinss/spark,JoshRosen/spark,sureshthalamati/spark,ajaysaini725/spark,esi-mineset/spark,zhouyejoe/spark,1haodian/spark,tengpeng/spark,Aegeaner/spark,tengpeng/spark,janewangfb/spark,witgo/spark,cin/spark,minixalpha/spark,akopich/spark,gengliangwang/spark,ajaysaini725/spark,panfengfeng/spark,icexelloss/spark,map222/spark,caneGuy/spark,skonto/spark,xflin/spark,maropu/spark,pronix/spark,Panos-Bletsos/spark-cost-model-optimizer,ueshin/apache-spark,dhruve/spark,cin/spark,goldmedal/spark,saltstar/spark,saltstar/spark,taroplus/spark,apache/spark,nilsgrabbert/spark,pgandhi999/spark,andrewor14/spark,SHASHANKB/spark,skonto/spark,zhouyejoe/spark,nchammas/spark,stanzhai/spark,Panos-Bletsos/spark-cost-model-optimizer,haowu80s/spark,adrian-ionescu/apache-spark,taroplus/spark,byakuinss/spark,andrewor14/iolap,sachintyagi22/spark,tengpeng/spark,srowen/spark,apache/spark,JerryLead/spark,vinodkc/spark,holdenk/spark,pgandhi999/spark,highfei2011/spark,bdrillard/spark,shuangshuangwang/spark,spark-test/spark,bravo-zhang/spark,apache-spark-on-k8s/spark,andrewor14/spark,ptkool/spark,nlalevee/spark,hvanhovell/spark,sahilTakiar/spark,milliman/spark,techaddict/spark,sureshthalamati/spark,markhamstra/spark,ueshin/apache-spark,highfei2011/spark,pronix/spark,wzhfy/spark,ConeyLiu/spark,aray/spark,apache-spark-on-k8s/spark,rikima/spark,icexelloss/spark,akopich/spark,hvanhovell/spark,JoshRosen/spark,jkbradley/spark,jiangxb1987/spark,kissmetrics/spark,apache-spark-on-k8s/spark,mahak/spark,MLnick/spark,zzcclp/spark,bOOm-X/spark,rikima/spark,dongjoon-hyun/spark,publicRoman/spark,jianran/spark,someorz/spark,cloud-fan/spark,eyalfa/spark,vinodkc/spark,techaddict/spark,jkbradley/spark,loneknightpy/spark,WindCanDie/spark,SnappyDataInc/spark,szhem/spark,hvanhovell/spark,liyichao/spark,hvanhovell/spark,MLnick/spark,eyalfa/spark,saturday-shi/spark,zhouyejoe/spark,cin/spark,kiszk/spark,actuaryzhang/spark,BryanCutler/spark,markhamstra/spark,facaiy/spark,JoshRosen/spark,jkbradley/spark,huang1900/spark,witgo/spark,JerryLead/spark,ConeyLiu/spark,milliman/spark,brad-kaiser/spark,loneknightpy/spark,janewangfb/spark,haowu80s/spark,sahilTakiar/spark,shaneknapp/spark,sureshthalamati/spark,xflin/spark,pgandhi999/spark,tengpeng/spark,ddna1021/spark,maropu/spark,rekhajoshm/spark,zuotingbing/spark,zhouyejoe/spark,gengliangwang/spark,bOOm-X/spark,goldmedal/spark,kissmetrics/spark,rikima/spark,janewangfb/spark,markhamstra/spark,szhem/spark,JerryLead/spark,sachintyagi22/spark,maropu/spark,adrian-ionescu/apache-spark,wzhfy/spark,rekhajoshm/spark,sureshthalamati/spark,techaddict/spark,alunarbeach/spark,andrewor14/iolap,janewangfb/spark,rikima/spark,shubhamchopra/spark,darionyaphet/spark,JerryLead/spark,hvanhovell/spark,bdrillard/spark,joseph-torres/spark,yanboliang/spark,mike0sv/spark,xuanyuanking/spark,highfei2011/spark,shaneknapp/spark,ron8hu/spark,kissmetrics/spark,zero323/spark,jrshust/spark,nlalevee/spark,aokolnychyi/spark,wzhfy/spark,holdenk/spark,Panos-Bletsos/spark-cost-model-optimizer,HyukjinKwon/spark,vinodkc/spark,jkbradley/spark,cin/spark,lxsmnv/spark,kimoonkim/spark,nchammas/spark,ajaysaini725/spark,aray/spark,liutang123/spark,kevinyu98/spark,yanboliang/spark,jiangxb1987/spark,LantaoJin/spark,xuanyuanking/spark,liyichao/spark,MLnick/spark,kiszk/spark,jkbradley/spark,ericvandenbergfb/spark,goldmedal/spark,gengliangwang/spark,highfei2011/spark,milliman/spark,ptkool/spark,1haodian/spark,kimoonkim/spark,jiangxb1987/spark,map222/spark,ajaysaini725/spark,ptkool/spark,janewangfb/spark,mahak/spark,ptkool/spark,lvdongr/spark,lxsmnv/spark,bravo-zhang/spark,brad-kaiser/spark,michalsenkyr/spark,ericvandenbergfb/spark,michalsenkyr/spark,sureshthalamati/spark,wangyum/spark,zero323/spark,dhruve/spark,big-pegasus/spark,kissmetrics/spark,jianran/spark,byakuinss/spark,guoxiaolongzte/spark,ibm-research-ireland/sparkoscope,ahnqirage/spark,eyalfa/spark,stanzhai/spark,narahari92/spark,huang1900/spark,andrewor14/spark,wangyum/spark,andrewor14/spark,publicRoman/spark,ibm-research-ireland/sparkoscope,xflin/spark,SHASHANKB/spark,big-pegasus/spark,caneGuy/spark,joseph-torres/spark,cin/spark,shubhamchopra/spark,ddna1021/spark,kevinyu98/spark,darionyaphet/spark,metamx/spark,akopich/spark,joseph-torres/spark,shaneknapp/spark,apache-spark-on-k8s/spark,brad-kaiser/spark,milliman/spark,hhbyyh/spark,publicRoman/spark,SnappyDataInc/spark,ioana-delaney/spark,big-pegasus/spark,aray/spark,aokolnychyi/spark,chuckchen/spark,ioana-delaney/spark,actuaryzhang/spark,metamx/spark,lvdongr/spark,lxsmnv/spark,mzl9039/spark,minixalpha/spark,taroplus/spark,debugger87/spark,adrian-ionescu/apache-spark,BryanCutler/spark,jrshust/spark,haowu80s/spark,hhbyyh/spark,ericvandenbergfb/spark,sahilTakiar/spark,zuotingbing/spark,nchammas/spark,actuaryzhang/spark,panfengfeng/spark,dhruve/spark,ddna1021/spark,MLnick/spark,LantaoJin/spark,maropu/spark,holdenk/spark,UndeadBaneGitHub/spark,wangmiao1981/spark,dongjoon-hyun/spark,ron8hu/spark,aokolnychyi/spark,map222/spark,cin/spark,bOOm-X/spark,srowen/spark,gioenn/xSpark,andrewor14/iolap,map222/spark,JoshRosen/spark,alunarbeach/spark,mahak/spark,nlalevee/spark,LantaoJin/spark,Panos-Bletsos/spark-cost-model-optimizer,apache/spark,HyukjinKwon/spark,dongjoon-hyun/spark,kevinyu98/spark,hhbyyh/spark,kevinyu98/spark,saltstar/spark,goldmedal/spark,akopich/spark,WindCanDie/spark,publicRoman/spark,metamx/spark,alunarbeach/spark,nilsgrabbert/spark,shaneknapp/spark,aray/spark,jlopezmalla/spark,spark-test/spark,joseph-torres/spark,guoxiaolongzte/spark,wangmiao1981/spark,vinodkc/spark,patrick-nicholson/spark,guoxiaolongzte/spark,Aegeaner/spark,dbtsai/spark,haowu80s/spark,guoxiaolongzte/spark,chuckchen/spark,sahilTakiar/spark,bravo-zhang/spark,yanboliang/spark,narahari92/spark,mike0sv/spark,patrick-nicholson/spark,tengpeng/spark,dbtsai/spark,skonto/spark,lvdongr/spark,bravo-zhang/spark,lvdongr/spark,nlalevee/spark,kevinyu98/spark,bravo-zhang/spark,andrewor14/spark,wangyum/spark,HyukjinKwon/spark,chuckchen/spark,map222/spark,byakuinss/spark,bdrillard/spark,big-pegasus/spark,rekhajoshm/spark,aokolnychyi/spark,loneknightpy/spark,pronix/spark,rezasafi/spark,ibm-research-ireland/sparkoscope,saltstar/spark,bOOm-X/spark,cloud-fan/spark,lxsmnv/spark,szhem/spark,setjet/spark,stanzhai/spark,ibm-research-ireland/sparkoscope,poffuomo/spark,icexelloss/spark,WeichenXu123/spark,panfengfeng/spark,srowen/spark,michalsenkyr/spark,gioenn/xSpark,mike0sv/spark,chuckchen/spark,byakuinss/spark,wzhfy/spark,1haodian/spark,Panos-Bletsos/spark-cost-model-optimizer,andrewor14/iolap,ajaysaini725/spark,ueshin/apache-spark,rednaxelafx/apache-spark,zuotingbing/spark,milliman/spark,rekhajoshm/spark,saturday-shi/spark,shubhamchopra/spark,dhruve/spark,zzcclp/spark,adrian-ionescu/apache-spark,jiangxb1987/spark,ibm-research-ireland/sparkoscope,stanzhai/spark,wangyum/spark,setjet/spark,wangyum/spark,alunarbeach/spark,ioana-delaney/spark,dongjoon-hyun/spark,dbtsai/spark,caneGuy/spark,cloud-fan/spark,JoshRosen/spark,mdespriee/spark,eyalfa/spark,esi-mineset/spark,haowu80s/spark,mahak/spark,srowen/spark,skonto/spark,wangmiao1981/spark,shubhamchopra/spark,JerryLead/spark,mahak/spark,guoxiaolongzte/spark,dongjoon-hyun/spark,rekhajoshm/spark,spark-test/spark,huang1900/spark,spark-test/spark,kissmetrics/spark,rednaxelafx/apache-spark,szhem/spark,taroplus/spark,JerryLead/spark,milliman/spark,hvanhovell/spark,big-pegasus/spark,nilsgrabbert/spark,LantaoJin/spark,shaneknapp/spark,saturday-shi/spark,WindCanDie/spark,sureshthalamati/spark,minixalpha/spark,debugger87/spark,publicRoman/spark,joseph-torres/spark,wzhfy/spark,bdrillard/spark,WeichenXu123/spark,ConeyLiu/spark,highfei2011/spark,ahnqirage/spark,jianran/spark,esi-mineset/spark,ajaysaini725/spark,jrshust/spark,bdrillard/spark,setjet/spark,poffuomo/spark,xflin/spark,ioana-delaney/spark,xuanyuanking/spark,ahnqirage/spark,guoxiaolongzte/spark,aosagie/spark,shuangshuangwang/spark,taroplus/spark,big-pegasus/spark,eyalfa/spark,goldmedal/spark,mdespriee/spark,rikima/spark,kiszk/spark,wzhfy/spark,SHASHANKB/spark,dongjoon-hyun/spark,szhem/spark,apache/spark,witgo/spark,nchammas/spark,jlopezmalla/spark,chuckchen/spark,techaddict/spark,stanzhai/spark,ibm-research-ireland/sparkoscope,map222/spark,kiszk/spark,jianran/spark,nilsgrabbert/spark,UndeadBaneGitHub/spark,BryanCutler/spark,sahilTakiar/spark,HyukjinKwon/spark,jrshust/spark,sahilTakiar/spark,witgo/spark,debugger87/spark,holdenk/spark,narahari92/spark,zuotingbing/spark,brad-kaiser/spark,zuotingbing/spark,zzcclp/spark,pronix/spark,wangmiao1981/spark,bOOm-X/spark,JoshRosen/spark,ericvandenbergfb/spark,sachintyagi22/spark,adrian-ionescu/apache-spark,eyalfa/spark,tejasapatil/spark,WeichenXu123/spark,UndeadBaneGitHub/spark,mdespriee/spark,dhruve/spark,pronix/spark,liutang123/spark,gioenn/xSpark,mdespriee/spark,lxsmnv/spark,highfei2011/spark,shuangshuangwang/spark