Enable Melody on review-dev.

Review-dev is running a Melody capable WAR, but the Melody service
was not enabled. Enable it.

Change-Id: I68934151a38c2572f37d996e1c923a880ab9f50f

manifests/site.pp

@@ -256,7 +256,9 @@ node "gerrit-dev.openstack.org", "review-dev.openstack.org" {
     war => 'http://ci.openstack.org/tarballs/test/gerrit-2.4.1-10-g98fd9d8.war',
     script_user => 'update',
     script_key_file => '/home/gerrit2/.ssh/id_rsa',
-    script_site => 'openstack'
+    script_site => 'openstack',
+    enable_melody => 'true',
+    melody_session => 'true'
   }
 }
 

modules/gerrit/manifests/init.pp

@@ -85,7 +85,9 @@ class gerrit($virtual_hostname='',
       $war,
       $script_user,
       $script_key_file,
-      $script_site
+      $script_site,
+      $enable_melody = 'false',
+      $melody_session = 'false'
   ) {
 
   # Set this to true to disable cron jobs and replication, which can

modules/gerrit/templates/gerrit.config.erb

@@ -72,3 +72,6 @@
 	changeTableOutdatedColor = f5cccc
 	tableOddRowColor = ffffff
 	tableEvenRowColor = f5f5ff
+[melody]
+	monitoring = <%= enable_melody %>
+	session = <%= melody_session %>