This is new RabbitMQ container with support for HA. It's next step for
provide HA support in Kolla project. RabbitMQ is supporting now
active/active model and It's ready for active/passive model.
Change-Id: I2eb6c65f6268ee96d377e72cf880a01c8042559e
Implements: blueprint rabbitmq-ha
214ac7e608