Allow empty FLAT_INTERFACE for local-only access
Allow empty FLAT_INTERFACE for local-only access

Change-Id: Icdee4ba6419bb89fd128a1dbd9e792fef6a62f23

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