Do not isolate networks for baremetal
Do not isolate networks for baremetal

Network isolaton is not currently a supported feature for baremetal
deployments.  This adjusts the isolated credentials to avoid creation of
isolated network environments for created tenants.  Instead, we rely on
a shared private network serving addresses from a common subnet.

Change-Id: I34b16ed5a6f9221707f3a9d0d4619bb3b261e14f

alinbalutoiu/tempest,cisco-openstack/tempest,JioCloud/tempest,roopali8/tempest,xbezdick/tempest,redhat-cip/tempest,jamielennox/tempest,pczerkas/tempest,afaheem88/tempest_neutron,vedujoshi/tempest,openstack/tempest,danielmellado/tempest,pczerkas/tempest,Juniper/tempest,masayukig/tempest,FujitsuEnablingSoftwareTechnologyGmbH/tempest,tudorvio/tempest,neerja28/Tempest,tonyli71/tempest,akash1808/tempest,varunarya10/tempest,izadorozhna/tempest,LIS/lis-tempest,flyingfish007/tempest,Mirantis/tempest,afaheem88/tempest,yamt/tempest,manasi24/jiocloud-tempest-qatempest,redhat-cip/tempest,Juniper/tempest,CiscoSystems/tempest,rakeshmi/tempest,dkalashnik/tempest,bigswitch/tempest,Tesora/tesora-tempest,Juraci/tempest,sebrandon1/tempest,Lilywei123/tempest,hpcloud-mon/tempest,izadorozhna/tempest,alinbalutoiu/tempest,cloudbase/lis-tempest,CiscoSystems/tempest,ebagdasa/tempest,nunogt/tempest,cisco-openstack/tempest,jamielennox/tempest,jaspreetw/tempest,akash1808/tempest,queria/my-tempest,rzarzynski/tempest,manasi24/tempest,eggmaster/tempest,manasi24/jiocloud-tempest-qatempest,jaspreetw/tempest,yamt/tempest,varunarya10/tempest,hayderimran7/tempest,Mirantis/tempest,nunogt/tempest,NexusIS/tempest,bigswitch/tempest,eggmaster/tempest,Vaidyanath/tempest,manasi24/tempest,vedujoshi/tempest,rzarzynski/tempest,JioCloud/tempest,flyingfish007/tempest,openstack/tempest,rakeshmi/tempest,FujitsuEnablingSoftwareTechnologyGmbH/tempest,masayukig/tempest,pandeyop/tempest,zsoltdudas/lis-tempest,pandeyop/tempest,sebrandon1/tempest,afaheem88/tempest,hayderimran7/tempest,tudorvio/tempest,ebagdasa/tempest,tonyli71/tempest,Vaidyanath/tempest,neerja28/Tempest,zsoltdudas/lis-tempest,Lilywei123/tempest,cloudbase/lis-tempest,Juraci/tempest,dkalashnik/tempest,danielmellado/tempest,queria/my-tempest,afaheem88/tempest_neutron,hpcloud-mon/tempest,NexusIS/tempest,Tesora/tesora-tempest,xbezdick/tempest,LIS/lis-tempest,roopali8/tempest