[CORD-2045] move files from 3.0 to 4.1; include copyright

Change-Id: Ie9675d198be1b36aea818935b8f264e7f5da7ffa
(cherry picked from commit 786c4c5b11171289cbfbb6f5b12586840aef206b)
diff --git a/xos/synchronizer/steps/sync_vhsstenant.py b/xos/synchronizer/steps/sync_vhsstenant.py
new file mode 100644
index 0000000..d6bdd49
--- /dev/null
+++ b/xos/synchronizer/steps/sync_vhsstenant.py
@@ -0,0 +1,49 @@
+# 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.
+
+import os
+import sys
+from django.db.models import Q, F
+from synchronizers.new_base.SyncInstanceUsingAnsible import SyncInstanceUsingAnsible
+from synchronizers.new_base.modelaccessor import *
+
+parentdir = os.path.join(os.path.dirname(__file__), "..")
+sys.path.insert(0, parentdir)
+
+class SyncVHSSTenant(SyncInstanceUsingAnsible):
+    provides = [VHSSTenant]
+
+    observes = VHSSTenant
+
+    requested_interval = 0
+
+    template_name = "vhsstenant_playbook.yaml"
+
+    service_key_name = "/opt/xos/configurations/mcord/mcord_private_key"
+
+    #Gets the attributes that are used by the Ansible template but are not
+    #part of the set of default attributes.
+
+    def __init__(self, *args, **kwargs):
+        super(SyncVHSSTenant, self).__init__(*args, **kwargs)
+
+    def fetch_pending(self, deleted):
+        if (not deleted):
+            objs = VHSSTenant.get_tenant_objects().filter(
+                Q(enacted__lt=F('updated')) | Q(enacted=None), Q(lazy_blocked=False))
+        else:
+            objs = VHSSTenant.get_deleted_tenant_objects()
+
+        return objs
+