[SPARK-11917][PYSPARK] Add SQLContext#dropTempTable to PySpark
[SPARK-11917][PYSPARK] Add SQLContext#dropTempTable to PySpark

Author: Jeff Zhang <zjffdu@apache.org>

Closes #9903 from zjffdu/SPARK-11917.

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