CORD-1954 add s-tag and c-tag to VEEServiceInstance

Change-Id: Id7826263b74fbc14b82346a467d304e731bdd23b
(cherry picked from commit 35e0c8bdf8a0ffc828e2c26958e43479f3e1acb6)
diff --git a/xos/tosca/resources/veeserviceinstance.py b/xos/tosca/resources/veeserviceinstance.py
new file mode 100644
index 0000000..b072bbe
--- /dev/null
+++ b/xos/tosca/resources/veeserviceinstance.py
@@ -0,0 +1,27 @@
+
+# Copyright 2017-present Open Networking Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+from core.models import User, ServiceInstanceLink
+from services.vee.models import VEEServiceInstance
+
+from xosresource import XOSResource
+from serviceinstance import XOSServiceInstance
+
+class XOSVEEServiceInstance(XOSServiceInstance):
+    provides = "tosca.nodes.VEEServiceInstance"
+    xos_model = VEEServiceInstance
+    copyin_props = ["service_specific_id", "s_tag", "c_tag"]
+