Telegraf-based keepalived state metrics

- enabled keepalived input for telegraf
- disabled fluentd config
- added new process alert for keepalived_up
- added new process state alert for UNKNOWN state
- improved process status panels by using keepalived_up
- added responsiveness panel

Change-Id: I0ff7d6f8527a98cb909aa896b51077704386ce35
Related-bug: PROD-23880 (PROD:23880)
diff --git a/metadata/service/support.yml b/metadata/service/support.yml
index 2828ef3..c3bc889 100644
--- a/metadata/service/support.yml
+++ b/metadata/service/support.yml
@@ -14,6 +14,6 @@
       prometheus:
         enabled: true
       fluentd:
-        enabled: true
+        enabled: false
       grafana:
         enabled: true