Add support of OSSysLogHandler logging handler

Change-Id: I69d0fa9dc06ec3a0bac16492482d713627e26c28
diff --git a/metadata/service/compute/ironic.yml b/metadata/service/compute/ironic.yml
index 339099e..5428d44 100644
--- a/metadata/service/compute/ironic.yml
+++ b/metadata/service/compute/ironic.yml
@@ -6,6 +6,7 @@
   _param:
     openstack_log_appender: false
     openstack_fluentd_handler_enabled: false
+    openstack_ossyslog_handler_enabled: false
   nova:
     compute:
       version: ${_param:nova_version}
@@ -37,6 +38,8 @@
             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}