MB-10179: check for vbopaque mismatch periodically

Change-Id: I3b2a0ffd145b55885bb4730c6746fcb8600f15b9
Reviewed-on: http://review.couchbase.org/40364
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Reviewed-by: Aliaksey Artamonau <aliaksiej.artamonau@gmail.com>