fixed broken decision between using full set vs first vbucket during

...development view execution

Change-Id: Icab8d274ab19828c96465d3c5e5d26c315649895
Reviewed-on: http://review.couchbase.org/43462
Tested-by: Artem Stemkovski <artem@couchbase.com>
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>