[EventHubs] Make __init__.py compatible with pkgutil-style namespace
* Make __init__.py compatible with pkgutil-style namespace
Fixes
* fix pylint and add license info
+# --------------------------------------------------------------------------------------------
+# Copyright (c) Microsoft Corporation. All rights reserved.
+# Licensed under the MIT License. See License.txt in the project root for license information.
+# --------------------------------------------------------------------------------------------
+__path__ = __import__("pkgutil").extend_path(__path__, __name__) # type: ignore
