Add fluentd support to Haproxy

Change-Id: I7e33085925d9a6bd56e2b37751e31f2df2ce3f33
diff --git a/metadata/service/support.yml b/metadata/service/support.yml
index 50c8d01..767cc82 100644
--- a/metadata/service/support.yml
+++ b/metadata/service/support.yml
@@ -15,3 +15,5 @@
         enabled: true
       prometheus:
         enabled: true
+      fluentd:
+        enabled: true