CBQE-1531: add negative and boundary tests for limit offset

Change-Id: I852c55e95b2c60ba57263aef4a378cf74fdd3b8d
Reviewed-on: http://review.couchbase.org/29375
Reviewed-by: Iryna Mironava <irynamironava@yandex.ru>
Tested-by: Iryna Mironava <irynamironava@yandex.ru>