Do not publish json report of job without totalCount

Change-Id: Id1fcde415d59d96caed01ff6a9a1b47b0cd2408e
Reviewed-on: http://review.couchbase.org/37127
Reviewed-by: Andrei Baranouski <andrei.baranouski@gmail.com>
Tested-by: Iryna Mironava <irynamironava@yandex.ru>