CBQE-2450: fix logs location

Change-Id: I86e23ae106247400ead178b12a60a87427dea9b2
Reviewed-on: http://review.couchbase.org/42579
Reviewed-by: Iryna Mironava <irynamironava@yandex.ru>
Tested-by: Iryna Mironava <irynamironava@yandex.ru>