增加type字段，区分退货换货业务类型，同时两个接口共用同一个topic

@@ -132,10 +132,10 @@ code==200表示成功,其它都为失败
 | | |
 | :-- | :-- |
 | exchanges | amq.topic |
-| route key | erp.updateChangeOrderStatus |
+| route key | erp.updateChangeRefundOrderStatus |
 
 ```json
-{"id":1,"status":40}
+{"id":1,"status":40,"type":"change"}
 ```
 
 
@@ -233,11 +233,12 @@ code==200表示成功,其它都为失败
 | | |
 | :-- | :-- |
 | exchanges | amq.topic |
-| route key | erp.updateRefundOrderStatus |
+| route key | erp.updateChangeRefundOrderStatus |
 
 ```json
 {   "returned_id":1,        //returned_id为erp系统退货单id唯一主键
-    "status":40
+    "status":40,
+    "type":"refund"
 }
 
 ```