VOL-1395: Common shared libraries needed for Python based device adapters.

This is an initial check-in of code from the master branch.  Additional work
is expected on a few items to work with the new go-core and will be covered
by separate JIRAs and commits.

Change-Id: I0856ec6b79b8d3e49082c609eb9c7eedd75b1708
diff --git a/python/adapters/extensions/__init__.py b/python/adapters/extensions/__init__.py
new file mode 100644
index 0000000..b0fb0b2
--- /dev/null
+++ b/python/adapters/extensions/__init__.py
@@ -0,0 +1,13 @@
+# 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.