CBQE-0 increase wait time to 10 seconds
in wait till proccess ended for windows

Change-Id: Ieb5e5c764d0905903984b1340ecf8cefe9b0682e
Reviewed-on: http://review.couchbase.org/43929
Reviewed-by: Thuan Nguyen <soccon@gmail.com>
Tested-by: Thuan Nguyen <soccon@gmail.com>