CBQE-2450: update n1ql tests

Change-Id: Ibc041d332050417275dd7d13a0e54753e8836c06
Reviewed-on: http://review.couchbase.org/42576
Reviewed-by: Iryna Mironava <irynamironava@yandex.ru>
Tested-by: Iryna Mironava <irynamironava@yandex.ru>