Unconfigure the devstack CA when USE_SSL is True
Unconfigure the devstack CA when USE_SSL is True

Change-Id: I17cb5e5d93bfe6fc6746ee530f639e2ed42da85a

bigswitch/devstack,bljgaurav/openstack-test,dtroyer/devstack,olivierlemasle/devstack,group-policy/devstack,BSJAIN92/OpenStack,nawawi/openstack,sc68cal/devstack,promptworks/devstack,BSJAIN92/OpenStack,olivierlemasle/devstack,dtroyer/devstack,vishnugonela/devstack,mssumanth/devstack,vsham20/devstack,liuquansheng47/devstack,richliu/devstack,ozamiatin/devstack,prithivm/branch01,pombredanne/devstack,bswartz/devstack,noironetworks/devstack,wenhuizhang/devstack,j4/devstack,avvocatodemarchis/devstack,ozamiatin/devstack,atulpatil301/devstack,vsham20/devstack,noironetworks/devstack,rushiagr/devstack,nawawi/openstack,mssumanth/devstack,group-policy/devstack,promptworks/devstack,HPCHub/devstack,parul24/devstack,CloudServer/devstack,affo/devstack,j4/devstack,andrewrothstein/devstack,dirkmueller/devstack,thomasem/devstack,nuxeh/devstack,mc2014/devstack,affo/devstack,kplus/devstack-moonshot,eharney/devstack,rushiagr/devstack,openstack-dev/devstack,upadhyay-prashant/devstack,atulpatil301/devstack,prithivm/branch01,HPCHub/devstack,pczerkas/devstack,varunarya10/devstack,kplus/devstack-moonshot,flavio-fernandes/devstack,mc2014/devstack,flavio-fernandes/devstack,sequenceiq/devstack,samgoon/devstack,Mahito/devstack,openstack-dev/devstack,mmasaki/devstack,bigswitch/devstack,neerja28/Devstack_GlusterFS,sequenceiq/devstack,sc68cal/devstack,pacinete/devstack,herrsechs/devstack,varunarya10/devstack,costingalan/devstack,wenhuizhang/devstack,eharney/devstack,neerja28/Devstack_GlusterFS,pombredanne/devstack,bq-xiao/devstack,LoHChina/devstack,thomasem/devstack,nuxeh/devstack,costingalan/devstack,parul24/devstack,upadhyay-prashant/devstack,CloudServer/devstack,bljgaurav/openstack-test,NaokiMiyata/devstack,TwinkleChawla/devstack,dirkmueller/devstack,herrsechs/devstack,vishnugonela/devstack,liuquansheng47/devstack,mmasaki/devstack,samgoon/devstack,bswartz/devstack,bq-xiao/devstack,avvocatodemarchis/devstack,TwinkleChawla/devstack,andrewrothstein/devstack,LoHChina/devstack,pacinete/devstack,Mahito/devstack,pczerkas/devstack,richliu/devstack,NaokiMiyata/devstack