Fix rabbitmq part 2

Change-Id: I69a5ace61dd621a7fc0354d4deb5e8937505e13e
Partial-Bug: #1480496

ansible/roles/rabbitmq/tasks/main.yml

@@ -4,3 +4,10 @@
 - include: bootstrap.yml
 
 - include: start.yml
+
+- name: Sleep while cluster starts
+  command: sleep 15
+  changed_when: False
+  failed_when: False
+
+- include: start.yml