Revert "Split off wikidata into a separate LVS service 'text-varnish'"

err: Could not retrieve catalog from remote server: Error 400 on SERVER: Only subclasses can override parameters at /var/lib/git/operations/puppet/manifests/role/cache.pp:783 on node sq61.wikimedia.org


This reverts commit e6539ddc5219ce817cf348a8d863f60e89738828.

Change-Id: I7932a762e90c5d6c81a4b206054a87ed76d89439