does a node and cluster check on post-start (see pivotal-cf#87)

jobs/rabbitmq-server/spec

@@ -87,6 +87,7 @@ templates:
   node-check.bash.erb:                      bin/node-check
   plugins.sh.erb:                           bin/plugins.sh
   post-deploy.bash:                         bin/post-deploy
+  post-start.bash:                          bin/post-start
   pre-start.bash:                           bin/pre-start
   rabbitmq-server.init.bash:                bin/rabbitmq-server.init
   setup.bash:                               bin/setup.sh

jobs/rabbitmq-server/templates/post-start.bash

@@ -0,0 +1,9 @@
+#!/bin/bash -e
+
+[ -z "$DEBUG" ] || set -x
+
+PATH=/var/vcap/jobs/rabbitmq-server/bin:$PATH
+
+node-check "post-start"
+cluster-check "post-start"
+add-rabbitmqctl-to-path