hook订阅曾增加过期清除功能，防止内存溢出

648540858

2022-08-31 275b272160679beaf19147764b73c1c439880593

 src/main/java/com/genersoft/iot/vmp/gb28181/task/ISubscribeTask.java

@@ -2,6 +2,9 @@

import javax.sip.DialogState;

/**
 * @author lin
 */
public interface ISubscribeTask extends Runnable{
    void stop();