Add support for deploying OVN SB relays [1].
This is enabled by default to improve large scale scenarios.
Default mechanism deploys one relay group per 50 ovn-controller hosts
and uses random but idempotent method to choose a relay for a given host.
neutron-server and Octavia will connect directly to SB cluster, not via
the relays.
kolla-ansible check subcommand does not support ,,iterated'' containers
for now - but will be introduced in a subsequent patch.
[1]: https://docs.ovn.org/en/latest/tutorials/ovn-ovsdb-relay.html
Co-Authored-By: Krzysztof Tomaszewski <ktomaszewski@cloudferro.com>
Depends-On: https://review.opendev.org/c/openstack/kolla/+/928898
Change-Id: Id7d6973668d8b2b194913b533f8cb756c6708536
8670c3f9d3