CBQE-0 increase wait time to 10 seconds in
wait till delete and wait till add file in windows

Change-Id: I9b0f722af2546f441d4e2a70088a00a52910ce58
Reviewed-on: http://review.couchbase.org/43928
Reviewed-by: Thuan Nguyen <soccon@gmail.com>
Tested-by: Thuan Nguyen <soccon@gmail.com>