Neutron, currently does a strict validation code
so that for non-shared network the subnets and
ports must belong to the same tenant as the network. In
the case of a "service VM" created by
admin user, this function should return thus allowing
admin users to create ports and networks in a tenant
network.
Change-Id: Ied831402d56b98a1323d30eb6a769fd2df5278ee
Closes-Bug: #1221315
abe3089906