Deprecate --service option for neutron-db-manage
Now that https://review.openstack.org/198542 has merged we can
deprecate the --service option. From now on instead of
--service fwaas
we should instead use
--subproject neutron-fwaas
This puts the *aas subprojects on equal footing with the other
projects in the Neutron Stadium for neutron-db-manage.
In the Liberty release the --service option will be marked as
deprecated. It will be removed in Mitaka.
Related-Bug: #
1470625
Change-Id: Iecc678efafd798b62bb83e6e85333c64760f16b5