Add configuration for fluentd

Correcting severity_label, pushing to default.

Change-Id: Ic857f6aa301101081f2452104ecdbeca84284b77
Related-bug: PROD-26116 (PROD:26116)
diff --git a/metadata/service/support.yml b/metadata/service/support.yml
index a4b5e81..efd57d9 100644
--- a/metadata/service/support.yml
+++ b/metadata/service/support.yml
@@ -1,5 +1,7 @@
 parameters:
   telegraf:
     _support:
+      fluentd:
+        enabled: true
       prometheus:
         enabled: true