Changes to Retrieve the cost for a LTL shipment.

deleted the header request parameter X-DELEGATED-PARTNER-ID

added the new optional request property shipments/items/allOf[subschema #2]/customsInfo/customsItems/items/importHarmonizedTariffNumber

added the new optional request property shipments/items/allOf[subschema #2]/customsInfo/europeanUnionInfo/windsorFramework

added the new optional request property shipments/items/allOf[subschema #2]/customsInfo/exportReturnInfo

added the new gal enum value to the request property shipments/items/allOf[subschema #2]/packages/items/orderItemQuantities/items/hazmatInfo/quantityUnits

added the optional property packageShipmentParameters/desktopDelivery to the response with the 200 status

added the optional property packageShipmentParameters/desktopDelivery to the response with the 400 status