Use mod_autoindex on files.o.o

So that it's easy for us to explore the afs hierarchy through the
web.

Change-Id: Ibe988660e8c633dd5a349c9bda588b12e0253475

modules/openstack_project/templates/files.vhost.erb

@@ -13,6 +13,7 @@ NameVirtualHost <%= @vhost_name %>:<%= @port %>
 
     DocumentRoot <%= @docroot %>
     <Directory <%= @docroot %>>
+        Options Indexes FollowSymLinks MultiViews
         Satisfy any
         Require all granted
     </Directory>