added one node into gateway cluster
diff --git a/reclass/storage/system/openstack_gateway_cluster.yml b/reclass/storage/system/openstack_gateway_cluster.yml
index 30e04ab..72e31c5 100644
--- a/reclass/storage/system/openstack_gateway_cluster.yml
+++ b/reclass/storage/system/openstack_gateway_cluster.yml
@@ -2,6 +2,11 @@
   _param:
     openstack_gateway_node01_hostname: gtw01
     openstack_gateway_node02_hostname: gtw02
+    openstack_gateway_node03_hostname: gtw03
+
+    openstack_gateway_node01_tenant_address: ${_param:single_address}
+    openstack_gateway_node02_tenant_address: ${_param:single_address}
+    openstack_gateway_node03_tenant_address: ${_param:single_address}
   reclass:
     storage:
       node:
@@ -14,6 +19,7 @@
             salt_master_host: ${_param:reclass_config_master}
             linux_system_codename: trusty
             single_address: ${_param:openstack_gateway_node01_address}
+            tenant_address: ${_param:openstack_gateway_node01_tenant_address}
         openstack_gateway_node02:
           name: ${_param:openstack_gateway_node02_hostname}
           domain: ${_param:cluster_domain}
@@ -23,4 +29,16 @@
             salt_master_host: ${_param:reclass_config_master}
             linux_system_codename: trusty
             single_address: ${_param:openstack_gateway_node02_address}
+            tenant_address: ${_param:openstack_gateway_node02_tenant_address}
+        openstack_gateway_node03:
+          name: ${_param:openstack_gateway_node03_hostname}
+          domain: ${_param:cluster_domain}
+          classes:
+          - cluster.${_param:cluster_name}.openstack.gateway
+          params:
+            salt_master_host: ${_param:reclass_config_master}
+            linux_system_codename: trusty
+            single_address: ${_param:openstack_gateway_node03_address}
+            tenant_address: ${_param:openstack_gateway_node03_tenant_address}
+