增加调试信息

src/main/java/com/telpo/iotgateway/server/IotSubscribe.java

@@ -106,7 +106,7 @@ public class IotSubscribe {
             // Session.AUTO_ACKNOWLEDGE: SDK自动ACK（推荐）。
             log.warn("Befor connection.createSession");
             Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
-            log.warn("Befor connection.start");
+            log.debug("Befor connection.start");
             connection.start();
 
             // 创建Receiver连接。消费消息