Add fluentd libvirt-exporter label

Change-Id: Id0e9f5930d86d403b419ee9f44d93459c1c9afed
Related-bug: PROD-26897 (PROD:26897)
diff --git a/metadata/service/exporters/libvirt.yml b/metadata/service/exporters/libvirt.yml
index 2c910bb..e76a788 100644
--- a/metadata/service/exporters/libvirt.yml
+++ b/metadata/service/exporters/libvirt.yml
@@ -1,5 +1,7 @@
 applications:
   - prometheus
+classes:
+ - service.prometheus.support
 parameters:
   _param:
     prometheus_exporter_libvirt_port: 9177
diff --git a/metadata/service/support.yml b/metadata/service/support.yml
index e4d3cb4..bbbbf18 100644
--- a/metadata/service/support.yml
+++ b/metadata/service/support.yml
@@ -7,3 +7,5 @@
         enabled: true
       telegraf:
         enabled: true
+      fluentd:
+        enabled: true