heat tools : openstack script don't create duplicate pv's
heat tools : openstack script don't create duplicate pv's

Don't create duplicate loopback mounts if nova-volumes VG
already exists

Change-Id: I1c580f2915cd92709fbbf4033f77ec3c64e4952e
Signed-off-by: Steven Hardy <4d1810d1ff6d7f22d774341c4549c02173d2f2ab@redhat.com>

dragorosson/heat,openstack/heat,takeshineshiro/heat,miguelgrinberg/heat,gonzolino/heat,steveb/heat,srznew/heat,ntt-sic/heat,varunarya10/heat,pshchelo/heat,varunarya10/heat,jasondunsmore/heat,cryptickp/heat,jasondunsmore/heat,Triv90/Heat,redhat-openstack/heat,noironetworks/heat,dragorosson/heat,JioCloud/heat,rh-s/heat,miguelgrinberg/heat,Triv90/Heat,takeshineshiro/heat,cwolferh/heat-scratch,rickerc/heat_audit,Triv90/Heat,gonzolino/heat,NeCTAR-RC/heat,pratikmallya/heat,citrix-openstack-build/heat,ntt-sic/heat,NeCTAR-RC/heat,rh-s/heat,dims/heat,steveb/heat,maestro-hybrid-cloud/heat,rdo-management/heat,redhat-openstack/heat,srznew/heat,JioCloud/heat,rdo-management/heat,citrix-openstack-build/heat,dims/heat,openstack/heat,rickerc/heat_audit,cryptickp/heat,pratikmallya/heat,maestro-hybrid-cloud/heat,cwolferh/heat-scratch,noironetworks/heat,pshchelo/heat