Added azure-messaging-nspkg (Azure#18266)

Author: johanste

sdk/nspkg/azure-messaging-nspkg/azure-messaging-nspkg/MANIFEST.in

@@ -0,0 +1,3 @@
+include *.md
+include azure/__init__.py
+include azure/messaging/__init__.py

sdk/nspkg/azure-messaging-nspkg/azure-messaging-nspkg/README.md

@@ -0,0 +1,16 @@
+# Microsoft Azure SDK for Python
+
+This is the Microsoft Azure Messaging namespace package.
+
+This package is not intended to be installed directly by the end user.
+
+Since version 3.0, this is Python 2 package only, Python 3.x SDKs will use [PEP420](https://www.python.org/dev/peps/pep-0420/) as namespace package strategy.
+To avoid issues with package servers that does not support `python_requires`, a Python 3 package is installed but is empty.
+
+It provides the necessary files for other packages to extend the azure.messaging namespace.
+
+If you are looking to install the Azure client libraries, see the
+[azure sdk python release](https://aka.ms/azsdk/python/all).
+
+
+![Impressions](https://azure-sdk-impressions.azurewebsites.net/api/impressions/azure-sdk-for-python%2Fazure-messaging-nspkg%2FREADME.png)

sdk/nspkg/azure-messaging-nspkg/azure-messaging-nspkg/azure/__init__.py

@@ -0,0 +1 @@
+__path__ = __import__('pkgutil').extend_path(__path__, __name__)

sdk/nspkg/azure-messaging-nspkg/azure-messaging-nspkg/azure/messaging/__init__.py

@@ -0,0 +1 @@
+__path__ = __import__('pkgutil').extend_path(__path__, __name__)

sdk/nspkg/azure-messaging-nspkg/azure-messaging-nspkg/sdk_packaging.toml

@@ -0,0 +1,2 @@
+[packaging]
+auto_update = false

sdk/nspkg/azure-messaging-nspkg/azure-messaging-nspkg/setup.py

@@ -0,0 +1,60 @@
+#!/usr/bin/env python
+
+#-------------------------------------------------------------------------
+# Copyright (c) Microsoft Corporation. All rights reserved.
+# Licensed under the MIT License. See License.txt in the project root for
+# license information.
+#--------------------------------------------------------------------------
+import sys
+from setuptools import setup
+
+# azure v0.x is not compatible with this package
+# azure v0.x used to have a __version__ attribute (newer versions don't)
+try:
+    import azure
+    try:
+        ver = azure.__version__
+        raise Exception(
+            'This package is incompatible with azure=={}. '.format(ver) +
+            'Uninstall it with "pip uninstall azure".'
+        )
+    except AttributeError:
+        pass
+except ImportError:
+    pass
+
+PACKAGES = []
+# Do an empty package on Python 3 and not python_requires, since not everybody is ready
+# https://github.com/Azure/azure-sdk-for-python/issues/3447
+# https://github.com/Azure/azure-sdk-for-python/issues/3481
+if sys.version_info[0] < 3:
+    PACKAGES = ['azure.messaging']
+
+setup(
+    name='azure-messaging-nspkg',
+    version='1.0.0',
+    description='Microsoft Messaging Namespace Package [Internal]',
+    long_description=open('README.md', 'r').read(),
+    long_description_content_type='text/markdown',
+    license='MIT License',
+    author='Microsoft Corporation',
+    author_email='azpysdkhelp@microsoft.com',
+    url='https://github.com/Azure/azure-sdk-for-python',
+    classifiers=[
+        'Development Status :: 5 - Production/Stable',
+        'Programming Language :: Python',
+        'Programming Language :: Python :: 2',
+        'Programming Language :: Python :: 2.7',
+        'Programming Language :: Python :: 3',
+        'Programming Language :: Python :: 3.4',
+        'Programming Language :: Python :: 3.5',
+        'Programming Language :: Python :: 3.6',
+        'Programming Language :: Python :: 3.7',
+        'License :: OSI Approved :: MIT License',
+    ],
+    zip_safe=False,
+    packages=PACKAGES,
+    install_requires=[
+        'azure-nspkg>=3.0.0',
+    ]
+)