Changes to Additional fulfillment settings by carrier.

the rates/location_id request property type changed from string to integer, and format from no format to int32

the rates/order_id request property type changed from string to integer, and format from no format to int32

added the new optional request property rates/origin_address

added the new optional request property rates/receiver_email

the request property rates/location_id became optional

added the non-success response with the status 404

endpoint added