CBQE-0: add results validation for reporting tool

Change-Id: I991bbc31d953094107c4f3b1dc2df798d062e71c
Reviewed-on: http://review.couchbase.org/36288
Reviewed-by: Iryna Mironava <irynamironava@yandex.ru>
Tested-by: Iryna Mironava <irynamironava@yandex.ru>