Enable support for telegraf

Change-Id: Ie2285a849815481477c8e709518b9d98d960d47a
diff --git a/metadata/service/support.yml b/metadata/service/support.yml
index 8cbd08c..6ad7d01 100644
--- a/metadata/service/support.yml
+++ b/metadata/service/support.yml
@@ -15,3 +15,5 @@
         enabled: true
       prometheus:
         enabled: true
+      telegraf:
+        enabled: true