Added a subscription for proper nginx restarts.

Change-Id: I7225ffde44d631b3f24fe34160ff8e7105ba0f8d
Reviewed-on: https://review.openstack.org/307
Reviewed-by: Monty Taylor <mordred@inaugust.com>
Tested-by: Jenkins

modules/apt_server/manifests/init.pp

@@ -39,6 +39,7 @@ class apt_server {
     enable     => true,
     hasrestart => true,
     require => Package['nginx'],
+    subscribe       => File['/etc/nginx/sites-available/default'],
   }
 
 }