Initial commit moving openolt adapter from voltha-go to the new repo.
This version works with ponsim rather than openolt, this is temporary.
It is currently being fixed to work with openolt.

Change-Id: I34a800c98f050140b367e2d474b7aa8b79f34b9a
Signed-off-by: William Kurkian <wkurkian@cisco.com>
diff --git a/python/adapters/common/kvstore/kvstore.py b/python/adapters/common/kvstore/kvstore.py
new file mode 100644
index 0000000..ed7f246
--- /dev/null
+++ b/python/adapters/common/kvstore/kvstore.py
@@ -0,0 +1,31 @@
+# Copyright 2018-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 consul_client import ConsulClient
+from etcd_client import EtcdClient
+
+def create_kv_client(kv_store, host, port):
+    '''
+    Factory for creating a client interface to a KV store
+
+    :param kv_store: Specify either 'etcd' or 'consul'
+    :param host: Name or IP address of host serving the KV store
+    :param port: Port number (integer) of the KV service
+    :return: Reference to newly created client interface
+    '''
+    if kv_store == 'etcd':
+        return EtcdClient(host, port)
+    elif kv_store == 'consul':
+        return ConsulClient(host, port)
+    return None