CBQE-0: Fix Rebalance-out test, change true to True

Change-Id: Idc4e9406737fe929934e2369ed72a131b78ee847
Reviewed-on: http://review.couchbase.org/44086
Reviewed-by: Parag Agarwal <agarwal.parag@gmail.com>
Tested-by: Parag Agarwal <agarwal.parag@gmail.com>