CBQE-0: don't change disabled_consistent_view by default in xdcr tests

Change-Id: I69b5806259bdbf3c2f272c0acd6fba2749ac5e9e
Reviewed-on: http://review.couchbase.org/35349
Tested-by: buildbot <build@couchbase.com>
Reviewed-by: Andrei Baranouski <andrei.baranouski@gmail.com>