AMBARI-9650 Metrics monitor alert is unknown (dsen)

ambari-server/src/main/resources/common-services/AMBARI_METRICS/0.1.0/package/alerts/alert_ambari_metrics_monitor.py

@@ -28,7 +28,7 @@ RESULT_CODE_OK = 'OK'
 RESULT_CODE_CRITICAL = 'CRITICAL'
 RESULT_CODE_UNKNOWN = 'UNKNOWN'
 
-AMS_MONITOR_PID_DIR = '{{ams-env/ams_monitor_pid_dir}}'
+AMS_MONITOR_PID_DIR = '{{ams-env/metrics_monitor_pid_dir}}'
 
 def get_tokens():
   """