CBQE-2315 add timeout to mark test failed if it is not done in 10 minutes

Change-Id: I76fec6339260406b94f4ad32fe162391d56754fa
Reviewed-on: http://review.couchbase.org/39106
Reviewed-by: Ketaki Gangal <ketakigangal@gmail.com>
Tested-by: Thuan Nguyen <soccon@gmail.com>