Use xinetd for rsync

Previously, using the rsync sevices on Ubuntu
did not actually work.

After reading the init script, I decided that it
is annoyingly different from Redhat's implementation
so I have chosen to use xinetd to make the module more
consistent between the distros.

manifests/storage.pp

@@ -24,7 +24,7 @@ class swift::storage(
 ) inherits swift {
 
   class{ 'rsync::server':
-    use_xinetd => false,
+    use_xinetd => true,
     address    => $storage_local_net_ip,
   }