Add XDCR Spec for Demeter
Add XDCR Spec for Demeter

Change-Id: I5d8bdb0656ded4a27e3f472ed3837c38c34f46b5
Reviewed-on: http://review.couchbase.org/c/perfrunner/+/138986
Tested-by: Build Bot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>
Reviewed-by: Jyotsna <3cacb23db2a7c1408e4b8802d74c875d7724fa89@couchbase.com>
Reviewed-by: <08ad95546f074ccc624648c6f011512c15934539@couchbase.com>

couchbase/perfrunner,couchbase/perfrunner,couchbase/perfrunner,couchbase/perfrunner,couchbase/perfrunner,couchbase/perfrunner