CBQE-1531: add tests for views+ query tool

Change-Id: I07670aab72dd88bb85e0c7fcf61c300a8c4b4646
Reviewed-on: http://review.couchbase.org/29391
Reviewed-by: Iryna Mironava <irynamironava@yandex.ru>
Tested-by: Iryna Mironava <irynamironava@yandex.ru>