优化 watchdog tfe worker thread 的实现逻辑

conf/tfe/tfe.conf

@@ -42,6 +42,15 @@ cmsg_port=2475
 watchdog_switch=1
 watchdog_port=2476
 
+[watchdog_tfe]
+# The worker thread updates the timestamp every two seconds
+# The watchdog thread checks the timestamp every second
+enable=1
+timeout_seconds=5
+statistics_window=20
+timeout_cnt_as_fail=3
+timeout_debug=0
+
 [ssl]
 ssl_ja3_debug=0
 ssl_ja3_table=PXY_SSL_FINGERPRINT