[CORD-2516] Implement HSS-DB service and its synchronizer

Change-Id: I3b5185669bf8a4506d4d60b8bc858537f41c640a
diff --git a/xos/synchronizer/hssdb-synchronizer.py b/xos/synchronizer/hssdb-synchronizer.py
new file mode 100644
index 0000000..f98bd92
--- /dev/null
+++ b/xos/synchronizer/hssdb-synchronizer.py
@@ -0,0 +1,31 @@
+# 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.
+
+#!/usr/bin/env python
+
+# This imports and runs ../../xos-observer.py
+
+import importlib
+import os
+import sys
+
+from xosconfig import Config
+config_file = os.path.abspath(os.path.dirname(os.path.realpath(__file__)) + '/hssdb_config.yaml')
+
+Config.init(config_file, 'synchronizer-config-schema.yaml')
+observer_path = os.path.join(os.path.dirname(os.path.realpath(__file__)), "../../synchronizers/new_base")
+
+sys.path.append(observer_path)
+mod = importlib.import_module("xos-synchronizer")
+mod.main()