优化目录更新，更新失败时只更新收到的内容不重置所有通道和自动拉流

648540858

2023-01-15 c19ad94c3ec45245914a7682174db5fb650ee08e

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package com.genersoft.iot.vmp.media.zlm.dto;
 
public class ServerKeepaliveData {
}