Logging Added nova-metadata log file

The log file for nova-metadata service is not configured for fluentd.
This patch adds the configuration

Change-Id: Idb174705f39ea91062f0a9c06c101a3f1a3ae73a

puppet/services/nova-metadata.yaml

@@ -37,6 +37,11 @@ parameters:
   EnableInternalTLS:
     type: boolean
     default: false
+  NovaMetadataLoggingSource:
+    type: json
+    default:
+      tag: openstack.nova.api.metadata
+      path: /var/log/nova/nova-api-metadata.log
 
 conditions:
   nova_workers_zero: {equals : [{get_param: NovaWorkers}, 0]}
@@ -93,5 +98,11 @@ outputs:
                   $NETWORK: {get_param: [ServiceNetMap, NovaMetadataNetwork]}
           - {}
       step_config: ""
+      service_config_settings:
+        fluentd:
+          tripleo_fluentd_groups_nova_metadata:
+            - nova
+          tripleo_fluentd_sources_nova_metadata:
+            - {get_param: NovaMetadataLoggingSource}
       metadata_settings:
         get_attr: [TLSProxyBase, role_data, metadata_settings]