CBQE-2558: update n1ql tests

Change-Id: If273226c83b10fbd99cbc26776cf0c339099546e
Reviewed-on: http://review.couchbase.org/43615
Reviewed-by: Iryna Mironava <irynamironava@yandex.ru>
Tested-by: Iryna Mironava <irynamironava@yandex.ru>