overriding attributes should be the next logical presedence

- using normal to override the attribute will still give the
  chance to override it.

Change-Id: I24210a953871f37b380eceb297597a6f6629d7af
(cherry picked from commit afc19bd6ce)

attributes/default.rb

@@ -27,7 +27,7 @@ default['openstack']['mq']['cluster'] = false
 default['openstack']['mq']['search_for_cluster_disk_nodes'] = true
 
 if platform_family?('debian', 'suse')
-  override['rabbitmq']['use_distro_version'] = true
+  normal['rabbitmq']['use_distro_version'] = true
   normal['rabbitmq']['config'] = '/etc/rabbitmq/rabbitmq.config'
 end