messaging: add erlang_cookie parameter

We updated puppetlabs-rabbitmq to latest stable version, so we need to
set erlang_cookie parameter.
Also, we set it as required without default value so we ensure all
deployments need to configure it in the data.

Change-Id: I1fba5d7277ec54281913f1a30d88649cd3c5b17b

manifests/messaging.pp

@@ -45,12 +45,18 @@
 #   (optional) Port of RabbitMQ service.
 #   Defaults to '5672'
 #
+# [*erlang_cookie*]
+#   (required) Erlang cookie to use.
+#   When running a cluster, this value should be the same for all
+#   the nodes.
+#
 # [*firewall_settings*]
 #   (optional) Allow to add custom parameters to firewall rules
 #   Should be an hash.
 #   Default to {}
 #
 class cloud::messaging(
+  $erlang_cookie,
   $cluster_node_type = 'disc',
   $rabbit_names      = $::hostname,
   $rabbit_password   = 'rabbitpassword',
@@ -88,6 +94,7 @@ class cloud::messaging(
     cluster_node_type        => $cluster_node_type,
     node_ip_address          => $rabbitmq_ip,
     port                     => $rabbitmq_port,
+    erlang_cookie            => $erlang_cookie,
   }
 
   rabbitmq_vhost { '/':

spec/classes/cloud_messaging_spec.rb

@@ -27,6 +27,7 @@ describe 'cloud::messaging' do
         :cluster_node_type => 'disc',
         :rabbit_names      => ['foo','boo','zoo'],
         :rabbit_password   => 'secrete',
+        :erlang_cookie     => 'MY_COOKIE',
         :rabbitmq_ip       => '10.0.0.1',
       }
     end
@@ -39,6 +40,7 @@ describe 'cloud::messaging' do
           :wipe_db_on_cookie_change => true,
           :cluster_node_type        => params[:cluster_node_type],
           :node_ip_address          => params[:rabbitmq_ip],
+          :erlang_cookie            => params[:erlang_cookie],
           :port                     => '5672',
         )
     end
@@ -102,6 +104,10 @@ describe 'cloud::messaging' do
       { :osfamily => 'RedHat' }
     end
 
+    let :params do
+      { :erlang_cookie => 'MY_COOKIE' }
+    end
+
     it_configures 'openstack messaging'
 
     it 'should create rabbitmq binaries symbolic links' do