Containerize RabbitMQ for HA

Containerize RabbitMQ for HA

This service allows configuring and deploying RabbitMQ containers
in a HA overcloud managed by pacemaker.

The containers are managed and run by pacemaker. Inside there is
pacemaker_remote which will invoke the resource agent managing galera.
The resources themselves are created via puppet-pacemaker inside a
short-lived container used for this purpose (mysql_init_bundle).
This container needs to use the 'docker_config' section to invoke
puppet (as opposed to 'docker_puppet_tasks'), because due to the HA
composability each resource creation needs to happen on the bootstrap
node of that service and 'docker_puppet_tasks' will only run on the
controller/primary role.

Co-Authored-By: Michele Baldessari <michele@acksyn.org>
Co-Authored-By: John Eckersberg <jeckersb@redhat.com>
Closes-Bug: #1692909

Depends-On: I0722e4a4d4716f477e8304cfa1aadd3eef7c2f31

Change-Id: I942737134385af775cade40c2d69516d4fe31a99