MB-12655: move vclock adding to 3.0.1 version config upgrade

Change-Id: If715d43f1eb1a6ab07fc676a321a0a0ec16bce86
Reviewed-on: http://review.couchbase.org/43337
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Reviewed-by: Aliaksey Artamonau <aliaksiej.artamonau@gmail.com>