Merge "Update rabbitmq to use new conf & clustering"

ansible/roles/rabbitmq/defaults/main.yml

ansible/roles/rabbitmq/handlers/main.yml

ansible/roles/rabbitmq/tasks/config.yml

ansible/roles/rabbitmq/tasks/upgrade.yml

ansible/roles/rabbitmq/templates/definitions.json.j2

ansible/roles/rabbitmq/templates/rabbitmq-env.conf.j2

ansible/roles/rabbitmq/templates/rabbitmq.conf.j2

ansible/roles/rabbitmq/templates/rabbitmq.config.j2

ansible/roles/rabbitmq/templates/rabbitmq.json.j2

releasenotes/notes/update-rabbitmq-5db770469b9bae18.yaml

tests/templates/globals-default.j2

tools/setup_gate.sh