修复回放、停止预览bug，增加ZLM hook监听，长时间无人观看，停止摄像头推流。需开启ZLM的hook并配置url

songww

2020-05-14 805fa42a2c010d92b1c8fc29a60d32fd99fb4ea3

 src/main/java/com/genersoft/iot/vmp/storager/redis/VideoManagerRedisStoragerImpl.java

@@ -96,8 +96,7 @@
    */  

   @Override

   public boolean delete(String deviceId) {

      redis.del(VideoManagerConstants.CACHEKEY_PREFIX+deviceId);

      return true;  
      return redis.del(VideoManagerConstants.CACHEKEY_PREFIX+deviceId);

   }



   /**