MB-12574: Lock down indexing and gometa so they can be updated

Change-Id: Ieb7cbcc0ed451debf5bf77c5cf8f20a621e86c86
Reviewed-on: http://review.couchbase.org/42977
Reviewed-by: Dave Finlay <dave.finlay@couchbase.com>
Tested-by: Chris Hillery <ceej@couchbase.com>