Add FedEx code RR

lib/TrackingStatus.lib.php

@@ -330,6 +330,7 @@ class TrackingStatus {
             case "AE": // Arriving early
             case "AS": // Address corrected
             case "HP": // Ready for pickup
+            case "RR": // Delivery change (redirect/hold for pickup) request submitted
                 return TrackingStatus::TRACKING_STATUS_INFO;
             case "RC": // Recipient
             case "DL": // Delivered