CBQE-2484: N1QL - fix test

Change-Id: Id8065b5df76872d98a976150b14620dad81db0f4
Reviewed-on: http://review.couchbase.org/43951
Tested-by: buildbot <build@couchbase.com>
Reviewed-by: Iryna Mironava <irynamironava@yandex.ru>