Made rabbitmq use host variables.

roles/rabbitmq/tasks/main.yml

@@ -8,9 +8,18 @@
     mode: 644
     owner: root
     group: root
+
 - name: install service file
   command: systemctl daemon-reload
+
 - name: make sure service is started
   systemd:
     name: rabbitmq.service
     state: started
+
+    #- name: setup the cluster
+    #  command: "docker exec -i rabbitmq.service {{ item }}"
+    #  with_items:
+    #      - rabbitmqctl stop_app
+    #      - "rabbitmqctl join_cluster rabbit_openstack01@{{ hostname_node0 }}"
+    #      - rabbitmqctl start_app