CBQE-0: fix test issue in rebalanceinout

Change-Id: Ib7ca8b490a06d409ed4567825b22aead02530faf
Reviewed-on: http://review.couchbase.org/36583
Tested-by: buildbot <build@couchbase.com>
Reviewed-by: Parag Agarwal <agarwal.parag@gmail.com>
Tested-by: Parag Agarwal <agarwal.parag@gmail.com>