Use c-api for service when creating cinder user.
Use c-api for service when creating cinder user.

- cinder is not a service but c-api is.

Change-Id: I580fe91216d3fa066120dc774811bfe08119ca02

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