CBQE:0 XDCR verification cleanup - renaming, ignoring checks, cancelling failed item count tasks

Change-Id: I9c9ef60739412e5fbc770eb0e8c8311dd9a82002
Reviewed-on: http://review.couchbase.org/37055
Tested-by: buildbot <build@couchbase.com>
Reviewed-by: Aruna Piravi <aruna@couchbase.com>