Setting XDCR_USE_NEW_PATH to true instead of UPR

Change-Id: I8fb33a5e57c912c97d7948be0ae234c1351c6dd8
Reviewed-on: http://review.couchbase.org/35570
Reviewed-by: Tommie McAfee <tommie@couchbase.com>
Tested-by: Aruna Piravi <aruna@couchbase.com>