centos: add provisioner
centos: add provisioner

Signed-off-by: Evan Hazlett <7e61ed261aef9abaa71fd4c2127eb6cb9f01ce10@gmail.com>

docker/docker.github.io,jmelis/machine,jgsqware/machine,LaynePeng/machine,gdevillele/docker.github.io,faijaz/docker-machine,jeanlaurent/machine,docker-zh/docker.github.io,beni55/machine,troy0820/docker.github.io,flavio/machine,schatt/machine,skatsuta/machine,robvanmieghem/machine,londoncalling/docker.github.io,cgvarela/machine,erikdejonge/machine,joeuo/docker.github.io,wenlock/machine,bookerzzz/machine,LuisBosquez/docker.github.io,alexisbellido/docker.github.io,bfirsh/machine,bdwill/docker.github.io,pdxjohnny/machine,dnephin/machine,usmanismail/machine,shubheksha/docker.github.io,wzymaster/machine,bwahn/machine,wlan0/machine,usmanismail/machine,jzwlqx/denverdino.github.io,robvanmieghem/machine,ksasi/machine,shubheksha/docker.github.io,databus23/machine,denverdino/docker.github.io,JohnKDay/machine,jsirois/machine,docker/docker.github.io,jhoos/machine,menglingwei/denverdino.github.io,whilp/machine,atsaki/machine-2,atsaki/machine-2,kacole2/machine,shin-/docker.github.io,sebadiaz/machine,BSWANG/denverdino.github.io,dskora/machine,sjfloat/machine,BSWANG/denverdino.github.io,jmelis/machine,marsmensch/machine,xiaohui/machine,SvenDowideit/machine,justintung/machine,dweomer/docker-machine,docker-zh/docker.github.io,dudymas/machine,jeanlaurent/machine,denverdino/denverdino.github.io,NeilW/machine,zchee/machine,mjtrefethen/machine,sausheong/machine,hypriot/machine,BSWANG/denverdino.github.io,bookerzzz/machine,danix800/docker.github.io,cgvarela/machine,hironobu-s/machine,JimGalasyn/docker.github.io,bgokden/machine,davidstosik/machine,moxiegirl/machine,robinbb/machine,kechol/machine,alexisbellido/docker.github.io,denverdino/machine-1,cab105/machine,kunalkushwaha/machine,joaofnfernandes/docker.github.io,blueyed/machine,ocean/machine,unodba/machine,dweomer/docker-machine,wzymaster/machine,phiroict/docker,allingeek/machine,hironobu-s/machine,usmanismail/machine,ppadala/machine,akolpakov/machine,databus23/machine,denverdino/denverdino.github.io,MHBauer/machine,sanscontext/docker.github.io,flavio/machine,StackPointCloud/machine,j3tm0t0/machine,allingeek/machine,trecloux/machine,shin-/docker.github.io,jhoos/machine,askb/machine,docker/machine,bdwill/docker.github.io,kunalkushwaha/machine,jarosser06/machine,otherjason/machine,ocean/machine,vovimayhem/machine,tpires/machine,alexisbellido/docker.github.io,hironobu-s/machine,sebadiaz/machine,MHBauer/machine,laveolu/machine,carloreggiani/machine,ekristen/machine,rwilliams/machine,asalhamed/machine,shot/machine,gerred/machine,seegno-forks/machine,johnstep/docker.github.io,jlusiardi/machine,allingeek/machine,shubheksha/docker.github.io,denverdino/machine-1,cvstebut/machine,juliengarcia/machine,ggiamarchi/machine,trecloux/machine,jpressnell/machine,rwilliams/machine,jlusiardi/machine,menglingwei/machine,soleo/machine,anshulr/machine,CenturyLinkLabs/machine,OpenNebula/machine,denverdino/denverdino.github.io,ekristen/machine,otherjason/machine,cab105/machine,sanscontext/docker.github.io,vovimayhem/machine,joaofnfernandes/docker.github.io,rdgreis/machine,londoncalling/docker.github.io,pottava/machine,londoncalling/machine,BSWANG/denverdino.github.io,kacole2/machine,brandoncc/machine,titanlien/machine,kechol/machine,menglingwei/denverdino.github.io,menglingwei/machine,wzymaster/machine,imikushin/machine,sanscontext/docker.github.io,ksasi/machine,gdevillele/docker.github.io,trecloux/machine,brandoncc/machine,troy0820/docker.github.io,StackPointCloud/machine,larsla/machine,sebadiaz/machine,johnstep/docker.github.io,titanlien/machine,carolynvs/machine,TrumanLing/machine,euank/machine,skippbox/kmachine,rillig/docker.github.io,pottava/machine,jasisk/machine,jeffellin/machine,paultag/machine,alindeman/machine,robertbreker/machine,steeve/machine,LaynePeng/machine,menglingwei/denverdino.github.io,vovimayhem/machine,nunofgs/docker-machine,ddaze/machine,jkingyens/machine,voutilad/machine,sanscontext/docker.github.io,Kast0rTr0y/docker-machine,jzwlqx/denverdino.github.io,thaJeztah/docker.github.io,ggiamarchi/machine,justintung/machine,yut148/machine,anweiss/docker.github.io,denmat/machine,joyent/machine,bfirsh/machine,shot/machine,phiroict/docker,slowteetoe/machine,amylindburg/machine,jkingyens/machine,Grynn/machine,rowancarr/machine,soleo/machine,JimGalasyn/docker.github.io,johnstep/docker.github.io,marsmensch/machine,sjfloat/machine,binario200/machine,surgeforward/machine,alindeman/machine,akolpakov/machine,ibuildthecloud/machine,amylindburg/machine,surgeforward/machine,londoncalling/machine,docker-zh/docker.github.io,zchee/machine,denverdino/denverdino.github.io,Parallels/docker-machine,Grynn/machine,dudymas/machine,jeanlaurent/machine,duglin/machine,aperepel/machine,anweiss/docker.github.io,thaJeztah/machine,titanlien/machine,skippbox/kmachine,shin-/docker.github.io,dudymas/machine,erikdejonge/machine,ehazlett/machine,deitch/machine,tyrken/machine,yanzay/machine,asalhamed/machine,wenlock/machine,LuisBosquez/docker.github.io,danix800/docker.github.io,wlan0/machine,faijaz/docker-machine,thaJeztah/docker.github.io,bdwill/docker.github.io,blueyed/machine,clintonskitson/machine,rawkode/machine,xinxian0458/machine,pdxjohnny/machine,dnephin/machine,jsirois/machine,carolynvs/machine,euank/machine,bgokden/machine,ddaze/machine,rupakg/machine,jasisk/machine,ppadala/machine,pragkent/machine,feelobot/machine,faijaz/docker-machine,errordeveloper/machine,sanscontext/docker.github.io,JohnKDay/machine,clintonskitson/machine,shin-/docker.github.io,gerred/machine,rillig/docker.github.io,pragkent/machine,binario200/machine,hypriot/machine,cvstebut/machine,tpires/machine,Grynn/machine,rillig/docker.github.io,denmat/machine,rwilliams/machine,xinxian0458/machine,menglingwei/denverdino.github.io,joaofnfernandes/docker.github.io,danix800/docker.github.io,alexisbellido/docker.github.io,unodba/machine,evq/machine,dgageot/machine,miqui/machine,bdwill/docker.github.io,voutilad/machine,soleo/machine,rdgreis/machine,tyrken/machine,skatsuta/machine,denverdino/docker.github.io,13W/machine,jzwlqx/denverdino.github.io,13W/machine,shot/machine,pottava/machine,phiroict/docker,pragkent/machine,nunofgs/docker-machine,troy0820/docker.github.io,juliengarcia/machine,legal90/machine,docker/machine,denverdino/machine,jarosser06/machine,otherjason/machine,dskora/machine,rillig/docker.github.io,johnstep/docker.github.io,wenlock/machine,jgsqware/machine,joeuo/docker.github.io,miqui/machine,juliengarcia/machine,moxiegirl/machine,exoscale/docker-machine,JimGalasyn/docker.github.io,askb/machine,StackPointCloud/machine,Herbis/machine,davidstosik/machine,paultag/machine,seegno-forks/machine,jpressnell/machine,feelobot/machine,imikushin/machine,bwahn/machine,johnstep/docker.github.io,mark-adams/machine,thaJeztah/docker.github.io,Kast0rTr0y/docker-machine,pdxjohnny/machine,phiroict/docker,crunchywelch/machine,gdevillele/docker.github.io,jmelis/machine,menglingwei/machine,menglingwei/denverdino.github.io,anweiss/docker.github.io,docker/docker.github.io,sausheong/machine,ubiquityhosting/machine,evq/machine,yut148/machine,jhoos/machine,joelea/machine,joeuo/docker.github.io,robertbreker/machine,JohnKDay/machine,exoscale/docker-machine,whilp/machine,aduermael/docker.github.io,docker-zh/docker.github.io,robvanmieghem/machine,dmp42/machine,dmp42/machine,CenturyLinkLabs/machine,atsaki/machine,kunalkushwaha/machine,slashk/machine,tpires/machine,joelea/machine,OpenNebula/machine,denverdino/docker.github.io,ibuildthecloud/machine,jeffellin/machine,aperepel/machine,NeilW/machine,csakoda/machine,errordeveloper/machine,mjtrefethen/machine,emsi/machine,carolynvs/machine,beni55/machine,gdevillele/docker.github.io,larsla/machine,jzwlqx/denverdino.github.io,carloreggiani/machine,jeffellin/machine,anshulr/machine,thaJeztah/machine,jlusiardi/machine,OpenNebula/machine,NeilW/machine,rupakg/machine,docker/docker.github.io,denverdino/machine,mark-adams/machine,kacole2/machine,bookerzzz/machine,joaofnfernandes/docker.github.io,denverdino/denverdino.github.io,xiaohui/machine,danix800/docker.github.io,gerred/machine,abstractitptyltd/machine,moxiegirl/machine,docker-zh/docker.github.io,jkingyens/machine,cpuguy83/machine,thaJeztah/machine,atsaki/machine,JimGalasyn/docker.github.io,deitch/machine,yanzay/machine,beni55/machine,alexisbellido/docker.github.io,jsirois/machine,slashk/machine,yanzay/machine,robertbreker/machine,ksasi/machine,zchee/machine,sjfloat/machine,denverdino/machine,SvenDowideit/machine,cvstebut/machine,abstractitptyltd/machine,duglin/machine,errordeveloper/machine,rawkode/machine,aduermael/docker.github.io,csakoda/machine,aduermael/docker.github.io,frapposelli/machine,slowteetoe/machine,legal90/machine,j3tm0t0/machine,Parallels/docker-machine,phiroict/docker,TrumanLing/machine,ppadala/machine,wlan0/machine,dgageot/machine,shubheksha/docker.github.io,cpuguy83/machine,joyent/machine,JimGalasyn/docker.github.io,LuisBosquez/docker.github.io,shin-/docker.github.io,LuisBosquez/docker.github.io,gdevillele/docker.github.io,rowancarr/machine,londoncalling/docker.github.io,jzwlqx/denverdino.github.io,bdwill/docker.github.io,rowancarr/machine,ubiquityhosting/machine,joeuo/docker.github.io,aduermael/docker.github.io,crunchywelch/machine,steeve/machine,ubiquityhosting/machine,bwahn/machine,londoncalling/docker.github.io,emsi/machine,askb/machine,miqui/machine,schatt/machine,databus23/machine,laveolu/machine,anweiss/docker.github.io,londoncalling/docker.github.io,anweiss/docker.github.io,skatsuta/machine,joaofnfernandes/docker.github.io,shubheksha/docker.github.io,davidstosik/machine,robinbb/machine,xiaohui/machine,joeuo/docker.github.io,thaJeztah/docker.github.io,jgsqware/machine,ehazlett/machine,denverdino/docker.github.io,thaJeztah/docker.github.io,troy0820/docker.github.io,LuisBosquez/docker.github.io,Herbis/machine,tyrken/machine,atsaki/machine,cab105/machine,docker/docker.github.io,BSWANG/denverdino.github.io,frapposelli/machine,denverdino/docker.github.io,bgokden/machine,xinxian0458/machine