MB-100: detect forceVersion even when it's not last parameter

Change-Id: If21e2d42e46bdef6726743eb93c9ae3f268e05fb
Reviewed-on: http://review.couchbase.org/30063
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Reviewed-by: Aliaksey Artamonau <aliaksiej.artamonau@gmail.com>