ifupdown2 2.0.0 release

This is a major update coming all at once from master-next branch
master-next branch was started with --orphan option which is basically a new
branch without history.

The major changes are:
    - repackaging
    - cleanup the directory tree
    - rewritte setup.py to allow install from deb file or pypi (pip install)
    - add a Makefile to make things (like building a deb) easier
    - review all debian files

Signed-off-by: Julien Fortin <julien@cumulusnetworks.com>

tests/test_ifupdown2.py

@@ -0,0 +1,22 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+"""Tests for `ifupdown2` package."""
+
+import pytest
+
+
+@pytest.fixture
+def response():
+    """Sample pytest fixture.
+
+    See more at: http://doc.pytest.org/en/latest/fixture.html
+    """
+    # import requests
+    # return requests.get('https://github.com/audreyr/cookiecutter-pypackage')
+
+
+def test_content(response):
+    """Sample pytest test function with the pytest fixture as an argument."""
+    # from bs4 import BeautifulSoup
+    # assert 'GitHub' in BeautifulSoup(response.content).title.string