CBQE-0: fix asset failure print summary

Change-Id: Ia163f851e5975dab0f74be867080bba6b83f480f
Reviewed-on: http://review.couchbase.org/36978
Tested-by: buildbot <build@couchbase.com>
Reviewed-by: Parag Agarwal <agarwal.parag@gmail.com>
Tested-by: Parag Agarwal <agarwal.parag@gmail.com>