add support in devstack to run it with cisco plugin
add support in devstack to run it with cisco plugin

implements blueprint cisco-plugin-support

Change-Id: Ib4716c9ef6daa059d5210631d927253bf2ba6a64

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