The RPC Hybrid Mode using both RabbitMQ and ZeroMQ was only
required during the upgrade from a previous version (21.12).
This change remove this mode.
NOTE: The unit tests use a fake implementation of the
openstack.common.rpc backend (RabbitMQ). These tests must
be adjusted so the legacy openstack rpc code can be removed
from the source tree.
I've marked this as TODO(RemoveOpenstackRPCBackend) to
be fixed at a later time.
Test Plan:
PASS: build-pkgs
PASS: Build ISO, install, bootstrap and host-unlock
Story: 2011343
Task: 51659
Change-Id: I521cffbe4604769b3f7ffa6cd464b6b41897cc26
Signed-off-by: Alyson Deives Pereira <alyson.deivespereira@windriver.com>