修改代码 使用 dock_sn 替代 gateway的表达

src/main/java/com/ruoyi/device/domain/model/thingsboard/constants/DeviceAttributes.java

@@ -22,9 +22,9 @@ public class DeviceAttributes {
             value -> value != null ? value.toString() : null
     );
 
-    // 网关 - String
-    public static final AttributeKey<String> GATEWAY = AttributeKey.of(
-            "gateway",
+    // 机场SN - String
+    public static final AttributeKey<String> DOCK_SN = AttributeKey.of(
+            "dock_sn",
             String.class,
             value -> value != null ? value.toString() : null
     );