CBQE-2238::
    Couchbase Quality Engineering
    CBQE-2238

Testrunner does not recover due to deadlock in rebalance after test run failure

Change-Id: I4181ece599b8f0c21eb5c4d499728767f906e127
Reviewed-on: http://review.couchbase.org/36800
Tested-by: buildbot <build@couchbase.com>
Reviewed-by: Parag Agarwal <agarwal.parag@gmail.com>
Tested-by: Parag Agarwal <agarwal.parag@gmail.com>