K8S based XOS Service for EPC

Change-Id: I65bdabc3d63240bbdd21cb9e8674ff6723dd994f
diff --git a/xos/synchronizer/models/vepcservice.xproto b/xos/synchronizer/models/vepcservice.xproto
new file mode 100644
index 0000000..223ee0c
--- /dev/null
+++ b/xos/synchronizer/models/vepcservice.xproto
@@ -0,0 +1,16 @@
+option app_label = "vepcservice";
+option name = "vepcservice";
+
+message VEpcService (Service){
+    option verbose_name = "Virtual EPC Service";
+}
+
+message VEpcServiceInstance (ServiceInstance){
+     option verbose_name = "Virtual EPC Instance";
+}
+
+message VEpcResourceInstanceLink(XOSBase) {
+    required string name = 1 [help_text = "Resource link name", db_index=True, tosca_key=True];
+    required manytoone resource_instance->KubernetesResourceInstance:vepc_resource_instance_links = 2 [help_text = "Kubernetes resource file content", db_index=True, null=False, blank=False];
+    required manytoone vepc_service_instance->VEpcServiceInstance:vepc_resource_instance_links = 3 [help_text = "Virtual EPC Service Instance", db_index=True, null=False, blank=False];
+}
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