Integrate rabbitmqctl interface to cluster and standalone containers

tools/docker-compose-cluster.yml

@@ -12,6 +12,7 @@ services:
       - "8013:8013"
       - "1936:1936"
       - "5555:5555"
+      - "15672:15672"
   tower_1:
     image: gcr.io/ansible-tower-engineering/tower_devel:${TAG}
     hostname: tower_1
@@ -22,6 +23,7 @@ services:
       RABBITMQ_VHOST: /
     volumes:
       - "../:/tower_devel"
+
   tower_2:
     image: gcr.io/ansible-tower-engineering/tower_devel:${TAG}
     hostname: tower_2