Fix smoke test RC plugin installation
Fix smoke test RC plugin installation

This commit fixes the smoke test RC plugin installation command to set
the es.plugins.staging system properly correctly.

gmarz/elasticsearch,rajanm/elasticsearch,zkidkid/elasticsearch,shreejay/elasticsearch,gingerwizard/elasticsearch,Shepard1212/elasticsearch,mortonsykes/elasticsearch,Stacey-Gammon/elasticsearch,shreejay/elasticsearch,wenpos/elasticsearch,spiegela/elasticsearch,ricardocerq/elasticsearch,fforbeck/elasticsearch,cwurm/elasticsearch,LewayneNaidoo/elasticsearch,myelin/elasticsearch,palecur/elasticsearch,zkidkid/elasticsearch,ZTE-PaaS/elasticsearch,s1monw/elasticsearch,kalimatas/elasticsearch,JervyShi/elasticsearch,cwurm/elasticsearch,robin13/elasticsearch,maddin2016/elasticsearch,ricardocerq/elasticsearch,wangtuo/elasticsearch,GlenRSmith/elasticsearch,trangvh/elasticsearch,masaruh/elasticsearch,ricardocerq/elasticsearch,artnowo/elasticsearch,maddin2016/elasticsearch,trangvh/elasticsearch,ThiagoGarciaAlves/elasticsearch,winstonewert/elasticsearch,fred84/elasticsearch,JervyShi/elasticsearch,gingerwizard/elasticsearch,fred84/elasticsearch,kalimatas/elasticsearch,gfyoung/elasticsearch,gfyoung/elasticsearch,MaineC/elasticsearch,rlugojr/elasticsearch,uschindler/elasticsearch,C-Bish/elasticsearch,henakamaMSFT/elasticsearch,strapdata/elassandra,girirajsharma/elasticsearch,jprante/elasticsearch,shreejay/elasticsearch,gingerwizard/elasticsearch,LewayneNaidoo/elasticsearch,dongjoon-hyun/elasticsearch,i-am-Nathan/elasticsearch,zkidkid/elasticsearch,spiegela/elasticsearch,glefloch/elasticsearch,Helen-Zhao/elasticsearch,camilojd/elasticsearch,fforbeck/elasticsearch,ThiagoGarciaAlves/elasticsearch,umeshdangat/elasticsearch,nazarewk/elasticsearch,camilojd/elasticsearch,njlawton/elasticsearch,lks21c/elasticsearch,sreeramjayan/elasticsearch,a2lin/elasticsearch,wangtuo/elasticsearch,avikurapati/elasticsearch,avikurapati/elasticsearch,nknize/elasticsearch,shreejay/elasticsearch,fforbeck/elasticsearch,s1monw/elasticsearch,awislowski/elasticsearch,lks21c/elasticsearch,mortonsykes/elasticsearch,robin13/elasticsearch,LeoYao/elasticsearch,jimczi/elasticsearch,artnowo/elasticsearch,sreeramjayan/elasticsearch,umeshdangat/elasticsearch,cwurm/elasticsearch,brandonkearby/elasticsearch,wangtuo/elasticsearch,qwerty4030/elasticsearch,mikemccand/elasticsearch,fernandozhu/elasticsearch,ZTE-PaaS/elasticsearch,jimczi/elasticsearch,dongjoon-hyun/elasticsearch,winstonewert/elasticsearch,naveenhooda2000/elasticsearch,s1monw/elasticsearch,kalimatas/elasticsearch,wuranbo/elasticsearch,markwalkom/elasticsearch,pozhidaevak/elasticsearch,scottsom/elasticsearch,mortonsykes/elasticsearch,lks21c/elasticsearch,camilojd/elasticsearch,alexshadow007/elasticsearch,obourgain/elasticsearch,qwerty4030/elasticsearch,uschindler/elasticsearch,palecur/elasticsearch,jprante/elasticsearch,ZTE-PaaS/elasticsearch,spiegela/elasticsearch,nknize/elasticsearch,i-am-Nathan/elasticsearch,elasticdog/elasticsearch,nilabhsagar/elasticsearch,njlawton/elasticsearch,yanjunh/elasticsearch,LewayneNaidoo/elasticsearch,GlenRSmith/elasticsearch,nilabhsagar/elasticsearch,scorpionvicky/elasticsearch,ZTE-PaaS/elasticsearch,LeoYao/elasticsearch,dongjoon-hyun/elasticsearch,wuranbo/elasticsearch,naveenhooda2000/elasticsearch,Shepard1212/elasticsearch,JSCooke/elasticsearch,robin13/elasticsearch,mohit/elasticsearch,obourgain/elasticsearch,MaineC/elasticsearch,henakamaMSFT/elasticsearch,JackyMai/elasticsearch,fforbeck/elasticsearch,njlawton/elasticsearch,maddin2016/elasticsearch,artnowo/elasticsearch,awislowski/elasticsearch,C-Bish/elasticsearch,IanvsPoplicola/elasticsearch,fernandozhu/elasticsearch,fforbeck/elasticsearch,mjason3/elasticsearch,JSCooke/elasticsearch,brandonkearby/elasticsearch,StefanGor/elasticsearch,liweinan0423/elasticsearch,i-am-Nathan/elasticsearch,JackyMai/elasticsearch,nazarewk/elasticsearch,scottsom/elasticsearch,rajanm/elasticsearch,nilabhsagar/elasticsearch,ThiagoGarciaAlves/elasticsearch,yanjunh/elasticsearch,artnowo/elasticsearch,winstonewert/elasticsearch,myelin/elasticsearch,uschindler/elasticsearch,StefanGor/elasticsearch,nilabhsagar/elasticsearch,nezirus/elasticsearch,JackyMai/elasticsearch,markwalkom/elasticsearch,palecur/elasticsearch,mjason3/elasticsearch,fernandozhu/elasticsearch,masaruh/elasticsearch,bawse/elasticsearch,girirajsharma/elasticsearch,nknize/elasticsearch,a2lin/elasticsearch,brandonkearby/elasticsearch,pozhidaevak/elasticsearch,fernandozhu/elasticsearch,coding0011/elasticsearch,avikurapati/elasticsearch,cwurm/elasticsearch,LeoYao/elasticsearch,IanvsPoplicola/elasticsearch,naveenhooda2000/elasticsearch,Stacey-Gammon/elasticsearch,masaruh/elasticsearch,scorpionvicky/elasticsearch,scorpionvicky/elasticsearch,nazarewk/elasticsearch,jprante/elasticsearch,dpursehouse/elasticsearch,glefloch/elasticsearch,glefloch/elasticsearch,dongjoon-hyun/elasticsearch,JervyShi/elasticsearch,JervyShi/elasticsearch,nazarewk/elasticsearch,wenpos/elasticsearch,GlenRSmith/elasticsearch,awislowski/elasticsearch,s1monw/elasticsearch,elasticdog/elasticsearch,qwerty4030/elasticsearch,rlugojr/elasticsearch,mohit/elasticsearch,artnowo/elasticsearch,sneivandt/elasticsearch,umeshdangat/elasticsearch,liweinan0423/elasticsearch,mjason3/elasticsearch,jimczi/elasticsearch,coding0011/elasticsearch,jimczi/elasticsearch,MaineC/elasticsearch,bawse/elasticsearch,jprante/elasticsearch,mikemccand/elasticsearch,mortonsykes/elasticsearch,alexshadow007/elasticsearch,maddin2016/elasticsearch,s1monw/elasticsearch,markwalkom/elasticsearch,nezirus/elasticsearch,fernandozhu/elasticsearch,strapdata/elassandra,ZTE-PaaS/elasticsearch,elasticdog/elasticsearch,MaineC/elasticsearch,vroyer/elasticassandra,umeshdangat/elasticsearch,maddin2016/elasticsearch,dpursehouse/elasticsearch,wangtuo/elasticsearch,gfyoung/elasticsearch,scorpionvicky/elasticsearch,rajanm/elasticsearch,sreeramjayan/elasticsearch,mohit/elasticsearch,gmarz/elasticsearch,geidies/elasticsearch,gmarz/elasticsearch,naveenhooda2000/elasticsearch,StefanGor/elasticsearch,dpursehouse/elasticsearch,fred84/elasticsearch,brandonkearby/elasticsearch,LewayneNaidoo/elasticsearch,a2lin/elasticsearch,ThiagoGarciaAlves/elasticsearch,pozhidaevak/elasticsearch,wenpos/elasticsearch,sneivandt/elasticsearch,jprante/elasticsearch,shreejay/elasticsearch,Helen-Zhao/elasticsearch,Helen-Zhao/elasticsearch,IanvsPoplicola/elasticsearch,robin13/elasticsearch,markwalkom/elasticsearch,rajanm/elasticsearch,uschindler/elasticsearch,vroyer/elasticassandra,bawse/elasticsearch,geidies/elasticsearch,strapdata/elassandra,rajanm/elasticsearch,vroyer/elassandra,fred84/elasticsearch,a2lin/elasticsearch,sneivandt/elasticsearch,Helen-Zhao/elasticsearch,liweinan0423/elasticsearch,Shepard1212/elasticsearch,brandonkearby/elasticsearch,pozhidaevak/elasticsearch,strapdata/elassandra5-rc,camilojd/elasticsearch,MaineC/elasticsearch,nezirus/elasticsearch,spiegela/elasticsearch,IanvsPoplicola/elasticsearch,C-Bish/elasticsearch,zkidkid/elasticsearch,geidies/elasticsearch,geidies/elasticsearch,palecur/elasticsearch,ricardocerq/elasticsearch,nezirus/elasticsearch,mikemccand/elasticsearch,elasticdog/elasticsearch,henakamaMSFT/elasticsearch,trangvh/elasticsearch,wuranbo/elasticsearch,dpursehouse/elasticsearch,JackyMai/elasticsearch,geidies/elasticsearch,GlenRSmith/elasticsearch,glefloch/elasticsearch,alexshadow007/elasticsearch,yanjunh/elasticsearch,lks21c/elasticsearch,gingerwizard/elasticsearch,njlawton/elasticsearch,mohit/elasticsearch,mikemccand/elasticsearch,JSCooke/elasticsearch,wuranbo/elasticsearch,Stacey-Gammon/elasticsearch,sreeramjayan/elasticsearch,JSCooke/elasticsearch,qwerty4030/elasticsearch,LewayneNaidoo/elasticsearch,nilabhsagar/elasticsearch,dpursehouse/elasticsearch,zkidkid/elasticsearch,markwalkom/elasticsearch,girirajsharma/elasticsearch,gingerwizard/elasticsearch,JervyShi/elasticsearch,yanjunh/elasticsearch,obourgain/elasticsearch,C-Bish/elasticsearch,rlugojr/elasticsearch,sneivandt/elasticsearch,strapdata/elassandra,i-am-Nathan/elasticsearch,nazarewk/elasticsearch,gmarz/elasticsearch,scottsom/elasticsearch,HonzaKral/elasticsearch,vroyer/elassandra,i-am-Nathan/elasticsearch,wenpos/elasticsearch,camilojd/elasticsearch,rlugojr/elasticsearch,winstonewert/elasticsearch,scottsom/elasticsearch,sreeramjayan/elasticsearch,coding0011/elasticsearch,HonzaKral/elasticsearch,awislowski/elasticsearch,umeshdangat/elasticsearch,jimczi/elasticsearch,elasticdog/elasticsearch,mikemccand/elasticsearch,gingerwizard/elasticsearch,Helen-Zhao/elasticsearch,LeoYao/elasticsearch,ThiagoGarciaAlves/elasticsearch,LeoYao/elasticsearch,gfyoung/elasticsearch,kalimatas/elasticsearch,trangvh/elasticsearch,obourgain/elasticsearch,gingerwizard/elasticsearch,a2lin/elasticsearch,liweinan0423/elasticsearch,sneivandt/elasticsearch,scottsom/elasticsearch,Shepard1212/elasticsearch,lks21c/elasticsearch,wenpos/elasticsearch,masaruh/elasticsearch,vroyer/elassandra,coding0011/elasticsearch,Stacey-Gammon/elasticsearch,geidies/elasticsearch,MisterAndersen/elasticsearch,ricardocerq/elasticsearch,gmarz/elasticsearch,mjason3/elasticsearch,scorpionvicky/elasticsearch,njlawton/elasticsearch,MisterAndersen/elasticsearch,StefanGor/elasticsearch,liweinan0423/elasticsearch,qwerty4030/elasticsearch,IanvsPoplicola/elasticsearch,MisterAndersen/elasticsearch,robin13/elasticsearch,sreeramjayan/elasticsearch,avikurapati/elasticsearch,myelin/elasticsearch,strapdata/elassandra5-rc,Stacey-Gammon/elasticsearch,HonzaKral/elasticsearch,bawse/elasticsearch,nknize/elasticsearch,dongjoon-hyun/elasticsearch,masaruh/elasticsearch,strapdata/elassandra5-rc,vroyer/elasticassandra,strapdata/elassandra5-rc,camilojd/elasticsearch,JackyMai/elasticsearch,girirajsharma/elasticsearch,GlenRSmith/elasticsearch,uschindler/elasticsearch,Shepard1212/elasticsearch,wangtuo/elasticsearch,JSCooke/elasticsearch,naveenhooda2000/elasticsearch,myelin/elasticsearch,girirajsharma/elasticsearch,glefloch/elasticsearch,girirajsharma/elasticsearch,awislowski/elasticsearch,alexshadow007/elasticsearch,kalimatas/elasticsearch,trangvh/elasticsearch,nezirus/elasticsearch,alexshadow007/elasticsearch,MisterAndersen/elasticsearch,rajanm/elasticsearch,fred84/elasticsearch,JervyShi/elasticsearch,avikurapati/elasticsearch,winstonewert/elasticsearch,nknize/elasticsearch,mohit/elasticsearch,henakamaMSFT/elasticsearch,mortonsykes/elasticsearch,obourgain/elasticsearch,rlugojr/elasticsearch,LeoYao/elasticsearch,C-Bish/elasticsearch,pozhidaevak/elasticsearch,gfyoung/elasticsearch,cwurm/elasticsearch,markwalkom/elasticsearch,myelin/elasticsearch,bawse/elasticsearch,ThiagoGarciaAlves/elasticsearch,strapdata/elassandra5-rc,MisterAndersen/elasticsearch,HonzaKral/elasticsearch,yanjunh/elasticsearch,henakamaMSFT/elasticsearch,wuranbo/elasticsearch,palecur/elasticsearch,coding0011/elasticsearch,LeoYao/elasticsearch,StefanGor/elasticsearch,strapdata/elassandra,mjason3/elasticsearch,spiegela/elasticsearch