CBQE-2282 http request return empty due to couchbase server
reboot after upgrade from 2.0 to 3.0

Change-Id: I2d0b2344ac687bd9b8c7cc88df3682fb7b6486b5
Reviewed-on: http://review.couchbase.org/37694
Tested-by: Thuan Nguyen <soccon@gmail.com>
Tested-by: buildbot <build@couchbase.com>
Reviewed-by: Parag Agarwal <agarwal.parag@gmail.com>