Only replicate openstack namespaces to github

As we start doing things like opendev, we should be able to add
additional prefixes in gerrit without replicating them to github - or
causing gerrit to just spawn errors.

Change-Id: I9bca81df9d9600c4ccb1550039f488c6eb552abd

modules/openstack_project/manifests/review.pp

@@ -238,6 +238,11 @@ class openstack_project::review (
           replicationDelay     => '1',
           replicatePermissions => false,
           mirror               => true,
+          projects             => [
+            'openstack/*',
+            'openstack-dev/*',
+            'openstack-infra/*',
+          ]
         },
         {
           name                 => 'local',