Add trove-api to $API_WORKERS
Add trove-api to $API_WORKERS

Ie4bb075310a61a0873c9e56e4974600dbb4794a1 missed trove when adding
support for $API_WORKERS.

Change-Id: Iaeb43ef63596a61ad9c128e57d6a2d68b688719e

parul24/devstack,rushiagr/devstack,dirkmueller/devstack,LoHChina/devstack,flavio-fernandes/devstack,prithivm/branch01,sequenceiq/devstack,pombredanne/devstack,TwinkleChawla/devstack,CloudServer/devstack,eharney/devstack,eshnil2000/devstack,atulpatil301/devstack,upadhyay-prashant/devstack,pacinete/devstack,vishnugonela/devstack,richliu/devstack,nuxeh/devstack,affo/devstack,olivierlemasle/devstack,olivierlemasle/devstack,nuxeh/devstack,HPCHub/devstack,group-policy/devstack,LoHChina/devstack,bigswitch/devstack,vsham20/devstack,bljgaurav/openstack-test,vsham20/devstack,Mahito/devstack,eharney/devstack,j4/devstack,sc68cal/devstack,rushiagr/devstack,varunarya10/devstack,nawawi/openstack,wenhuizhang/devstack,virtualopensystems/devstack,vishnugonela/devstack,HPCHub/devstack,neerja28/Devstack_GlusterFS,liuquansheng47/devstack,group-policy/devstack,promptworks/devstack,BSJAIN92/OpenStack,nawawi/openstack,mc2014/devstack,atulpatil301/devstack,bljgaurav/openstack-test,bq-xiao/devstack,andrewrothstein/devstack,avvocatodemarchis/devstack,herrsechs/devstack,openstack-dev/devstack,noironetworks/devstack,costingalan/devstack,sc68cal/devstack,NaokiMiyata/devstack,varunarya10/devstack,mssumanth/devstack,sequenceiq/devstack,parul24/devstack,dtroyer/devstack,pczerkas/devstack,j4/devstack,CloudServer/devstack,mmasaki/devstack,noironetworks/devstack,mssumanth/devstack,bswartz/devstack,tianweizhang/devstack,mmasaki/devstack,bq-xiao/devstack,richliu/devstack,TwinkleChawla/devstack,ozamiatin/devstack,liuquansheng47/devstack,herrsechs/devstack,pombredanne/devstack,pczerkas/devstack,tianweizhang/devstack,thomasem/devstack,wenhuizhang/devstack,flavio-fernandes/devstack,kplus/devstack-moonshot,thomasem/devstack,mc2014/devstack,prithivm/branch01,NaokiMiyata/devstack,kplus/devstack-moonshot,costingalan/devstack,upadhyay-prashant/devstack,neerja28/Devstack_GlusterFS,Mahito/devstack,affo/devstack,andrewrothstein/devstack,avvocatodemarchis/devstack,openstack-dev/devstack,promptworks/devstack,samgoon/devstack,bigswitch/devstack,samgoon/devstack,bswartz/devstack,BSJAIN92/OpenStack,ozamiatin/devstack,dtroyer/devstack,pacinete/devstack,dirkmueller/devstack