[2925] Change default also_notify port to 53

src/bin/xfrout/xfrout.spec.pre.in

@@ -43,7 +43,7 @@
                    "item_name": "port",
                    "item_type": "integer",
                    "item_optional": false,
-                   "item_default": 0
+                   "item_default": 53
                }
              ]
          }