Add support for Sensu integration with StackLight

This patch deployes Sensu as a cluster and adds a StackLight client.
diff --git a/rabbitmq/server/vhost/monitoring.yml b/rabbitmq/server/vhost/monitoring.yml
index 84bff97..af272b9 100644
--- a/rabbitmq/server/vhost/monitoring.yml
+++ b/rabbitmq/server/vhost/monitoring.yml
@@ -5,4 +5,4 @@
         '/monitor':
           enabled: true
           user: monitor
-          password: ${_param:rabbitmq_monitoring_password}
+          password: ${_param:rabbitmq_monitor_password}