puppet: add missing ::glance include on controller

On Controller node, we also need to include ::glance if we want to have
common Glance bits (packaging included).
This is a Puppet best practice.

Change-Id: I967c06b2c78d8f3aa5fa984b518d34c813426a2e

puppet/manifests/overcloud_controller.pp

@@ -217,6 +217,7 @@ if hiera('step') >= 3 {
   }
 
   # TODO: notifications, scrubber, etc.
+  include ::glance
   include ::glance::api
   include ::glance::registry
   include ::glance::backend::swift