新增设备主子码流选择，默认为不开启

‘sxh’

2023-06-15 15df08964bb459d6d01ec5ef423eae094eac1c72

 src/main/java/com/genersoft/iot/vmp/service/bean/MessageForPushChannel.java

@@ -48,6 +48,8 @@
     */
    private String mediaServerId;



    public static MessageForPushChannel getInstance(int type, String app, String stream, String gbId,
                                                    String platFormId, String platFormName, String serverId,
                                                    String mediaServerId){