added support for short hostnames in rhmk_servers due to rabbitmq issue

manifests/profile/rabbitmq.pp

@@ -6,6 +6,7 @@ class iaas::profile::rabbitmq (
   $erlang 	   = undef,
   $node_hostname   = $::hostname,
 ) {
+  $short_hostname_servers = regsubst($servers, '\..*','\1')
   class {'erlang': } ->
   package { 'erlang-base':
     ensure => 'latest',
@@ -16,7 +17,7 @@ class iaas::profile::rabbitmq (
     port => 5672,
     delete_guest_user => true,
     config_cluster => true,
-    cluster_nodes => $servers,
+    cluster_nodes => $short_hostname_servers,
     erlang_cookie => $erlang,
     cluster_node_type => 'ram',
     wipe_db_on_cookie_change => true,