CBQE-1531: modify logging for tuq

Change-Id: Iaee4950fc9d7b1c170208db80081c00a40743fc3
Reviewed-on: http://review.couchbase.org/29553
Reviewed-by: Iryna Mironava <irynamironava@yandex.ru>
Tested-by: Iryna Mironava <irynamironava@yandex.ru>