MB-12698: Increase timeout for verify items count and ep_queue=0

Change-Id: Ibdf1410ed7dc48ba848400409363b4b2346ed775
Reviewed-on: http://review.couchbase.org/43542
Reviewed-by: Sangharsh Agarwal <sangharsh.agarwal@globallogic.com>
Tested-by: Sangharsh Agarwal <sangharsh.agarwal@globallogic.com>