CBQE-0 :: fix test failures in failover when we do not want to run rebalance after failover

Change-Id: I85cd51f1283717883f48c6aa4f5f53a82d0dbf13
Reviewed-on: http://review.couchbase.org/39546
Reviewed-by: Thuan Nguyen <soccon@gmail.com>
Reviewed-by: Parag Agarwal <agarwal.parag@gmail.com>
Tested-by: Parag Agarwal <agarwal.parag@gmail.com>