Add support of OSSysLogHandler logging handler

Change-Id: I5932c575c14e21b81aee776977b448fba5e9669f
diff --git a/metadata/service/server/cluster.yml b/metadata/service/server/cluster.yml
index 1bc8da2..2d222d4 100644
--- a/metadata/service/server/cluster.yml
+++ b/metadata/service/server/cluster.yml
@@ -7,6 +7,7 @@
     keystone_aodh_endpoint_type: internalURL
     openstack_log_appender: false
     openstack_fluentd_handler_enabled: false
+    openstack_ossyslog_handler_enabled: false
   aodh:
     server:
       enabled: true
@@ -40,6 +41,8 @@
             enabled: true
           fluentd:
             enabled: ${_param:openstack_fluentd_handler_enabled}
+          ossyslog:
+            enabled: ${_param:openstack_ossyslog_handler_enabled}
       message_queue:
         engine: rabbitmq
         host: ${_param:cluster_vip_address}