CBQE-0 add support cb 2.5.2

Change-Id: I3778710211f6e3add9bb2f2b43e8ad8473949d55
Reviewed-on: http://review.couchbase.org/43461
Reviewed-by: Thuan Nguyen <soccon@gmail.com>
Tested-by: Thuan Nguyen <soccon@gmail.com>