MB-7566:  add external-override-2.0.2.xml

Change-Id: I063a88c049c357317918c3d44ea14f8f80c3d1aa
Reviewed-on: http://review.couchbase.org/24171
Reviewed-by: Philip Labee <philip@couchbase.com>
Tested-by: Philip Labee <philip@couchbase.com>