Added custom type for metro-net service

Change-Id: Iba71948cfc3092ae41d7b93ce9f80791342afc35
diff --git a/xos/metronet.m4 b/xos/metronet.m4
new file mode 100644
index 0000000..a32c200
--- /dev/null
+++ b/xos/metronet.m4
@@ -0,0 +1,18 @@
+tosca_definitions_version: tosca_simple_yaml_1_0
+
+# compile this with "m4 metronet.m4 > metronet.yaml"
+
+# include macros
+include(macros.m4)
+
+node_types:
+    
+    tosca.nodes.MetroNetworkService:
+        derived_from: tosca.nodes.Root
+        description: >
+            CORD: The Metro Network Service.
+        capabilities:
+            xos_base_service_caps
+        properties:
+            xos_base_props
+            xos_base_service_props