Stop adding the stack user to the sudo or wheel group
Stop adding the stack user to the sudo or wheel group

This is not needed since we explicitly add a sudoers rule for the stack
user.

Change-Id: I4c63ab25811d55b7eee2677c954133dc3e7ae397

cloudbuilders/devstack,vsham20/devstack,inkerra/devstack,citrix-openstack-build/devstack,r-mibu/devstack,nawawi/openstack,nuxeh/devstack,sc68cal/devstack,CloudServer/devstack,sstrato/devstack,bq-xiao/devstack,sc68cal/devstack,cloudbuilders/devstack,noironetworks/devstack,HPCHub/devstack,avvocatodemarchis/devstack,Mahito/devstack,eshnil2000/devstack,tianweizhang/devstack,pczerkas/devstack,rushiagr/devstack,ewindisch/raspi-devstack,HPCHub/devstack,thomasem/devstack,prithivm/branch01,TwinkleChawla/devstack,varunarya10/devstack,flavio-fernandes/devstack,ewindisch/raspi-devstack,deepakselvaraj/devstack,nttmcl/devstack_public,Yuriy-Leonov/devstack,j4/devstack,pombredanne/devstack,JioCloud/devstack,samgoon/devstack,liuquansheng47/devstack,varunarya10/devstack,affo/devstack,Juniper/devstack,bswartz/devstack,richliu/devstack,jamielennox/devstack,group-policy/devstack,TwinkleChawla/devstack,liuquansheng47/devstack,herrsechs/devstack,olivierlemasle/devstack,mc2014/devstack,srics/devstack,nuxeh/devstack,dtroyer/devstack,bswartz/devstack,savi-dev/devstack,rushiagr/devstack,bigswitch/devstack,Mahito/devstack,mc2014/devstack,bljgaurav/openstack-test,promptworks/devstack,nttmcl/devstack_public,atulpatil301/devstack,openstack-dev/devstack,pczerkas/devstack,citrix-openstack-build/devstack,thomasem/devstack,williamthegrey/devstack,pacinete/devstack,nati/devstack_public,dtroyer/devstack,costingalan/devstack,BSJAIN92/OpenStack,BSJAIN92/OpenStack,wenhuizhang/devstack,LoHChina/devstack,samgoon/devstack,Millnert/contrail-devstack,CiscoSystems/devstack,kplus/devstack-moonshot,vsham20/devstack,mssumanth/devstack,virtualopensystems/devstack,ozamiatin/devstack,costingalan/devstack,yamt/devstack,eharney/devstack,promptworks/devstack,dirkmueller/devstack,andrewrothstein/devstack,atulpatil301/devstack,pacinete/devstack,nati/devstack_public,mmasaki/devstack,armando-migliaccio/devstack,parul24/devstack,vishnugonela/devstack,bljgaurav/openstack-test,noironetworks/devstack,herrsechs/devstack,sequenceiq/devstack,kplus/devstack-moonshot,CloudServer/devstack,openstack-dev/devstack,mmasaki/devstack,j4/devstack,savi-dev/devstack,upadhyay-prashant/devstack,upadhyay-prashant/devstack,r-mibu/devstack,vishnugonela/devstack,group-policy/devstack,neerja28/Devstack_GlusterFS,avvocatodemarchis/devstack,mssumanth/devstack,shootstar/devstacktest,NaokiMiyata/devstack,ozamiatin/devstack,prithivm/branch01,ykaneko/devstack,eharney/devstack,nawawi/openstack,neerja28/Devstack_GlusterFS,bigswitch/devstack,LoHChina/devstack,affo/devstack,olivierlemasle/devstack,dirkmueller/devstack,ykaneko/devstack,flavio-fernandes/devstack,wenhuizhang/devstack,bq-xiao/devstack,pombredanne/devstack,sequenceiq/devstack,parul24/devstack,andrewrothstein/devstack,richliu/devstack,NaokiMiyata/devstack,innodee/openstackk,tianweizhang/devstack