Moving TripleO repos to independent release model
Moving TripleO repos to independent release model

As discussed in [1] this lays out the proposal to move tripleo
repos to independent release. Tried to address the points raised
in the discussion.

[1] http://lists.openstack.org/pipermail/openstack-discuss/2021-June/thread.html#22959

Change-Id: I58bceea4920958e6009bb7193f7946217b0d1d2c

openstack/tripleo-specs,openstack/tripleo-specs