CORD-3028 simple example service

Change-Id: I48ed0e9af080fbfed50b5bd2a9790652d3c907d8
diff --git a/xos/synchronizer/steps/sync_simpleexampleserviceinstance.py b/xos/synchronizer/steps/sync_simpleexampleserviceinstance.py
new file mode 100644
index 0000000..c8e7c52
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+++ b/xos/synchronizer/steps/sync_simpleexampleserviceinstance.py
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+
+# 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 synchronizers.new_base.syncstep import SyncStep
+from synchronizers.new_base.modelaccessor import *
+from xosconfig import Config
+from multistructlog import create_logger
+
+log = create_logger(Config().get('logging'))
+
+class SyncSimpleExampleServiceInstance(SyncStep):
+
+    provides = [SimpleExampleServiceInstance]
+
+    observes = SimpleExampleServiceInstance
+
+    requested_interval = 0
+
+    template_name = "simpleexampleserviceinstance_playbook.yaml"
+
+    service_key_name = "/opt/xos/synchronizers/exampleservicenew/simpleexampleservice_private_key"
+
+    def __init__(self, *args, **kwargs):
+        super(SyncSimpleExampleServiceInstance, self).__init__(*args, **kwargs)
+
+    def sync_record(self, o):
+        # There's nothing to do at this time. Configuration of ExampleServiceInstance is handled by Kubernetes
+        # through config maps, and that all happens in the model policy.
+        #
+        # TODO(smbaker): Consider deleting this sync step
+        pass