CBQE-0 :: change unacked byte verification according to design for views and failover when doing firewall testing

Change-Id: Icca792f8b19bed054b96e4f495af71ed47cad7fa
Reviewed-on: http://review.couchbase.org/38350
Tested-by: buildbot <build@couchbase.com>
Reviewed-by: Michael Wiederhold <mike@couchbase.com>
Reviewed-by: Parag Agarwal <agarwal.parag@gmail.com>
Tested-by: Parag Agarwal <agarwal.parag@gmail.com>