beta: manage virtualhosts via puppet

We need to manage apache configs in the same way both in beta and
production. With this change, it should be easier to test appserver
changes in beta first and then in production, with less moving parts.

Change-Id: I6b9efb850ae74c00446df5bb744d636d38a79f5c
Signed-off-by: Giuseppe Lavagetto <glavagetto@wikimedia.org>