Add fluentd support to ES

Change-Id: I2a0e7b4f6cdfdb3fda51ed1983e68b173b600441
diff --git a/metadata/service/support.yml b/metadata/service/support.yml
index 4e2c98a..7140e23 100644
--- a/metadata/service/support.yml
+++ b/metadata/service/support.yml
@@ -15,3 +15,5 @@
         enabled: true
       prometheus:
         enabled: true
+      fluentd:
+        enabled: true