add Tox

Signed-off-by: JordanP <jordan.pittier@cloudwatt.com>
Change-Id: I8b2e0b375bb041f4f27933cc0f2ba6a5e22bc8a0

tox.ini

@@ -0,0 +1,29 @@
+[tox]
+envlist = pep8
+minversion = 1.6
+skipsdist = True
+
+[testenv]
+usedevelop = True
+install_command = pip install -U {opts} {packages}
+setenv = VIRTUAL_ENV={envdir}
+         LANG=en_US.UTF-8
+         LANGUAGE=en_US:en
+         LC_ALL=C
+         OS_STDOUT_NOCAPTURE=False
+         OS_STDERR_NOCAPTURE=False
+
+deps = -r{toxinidir}/requirements.txt
+       -r{toxinidir}/test-requirements.txt
+commands = python setup.py testr --testr-args='{posargs}'
+
+[testenv:pep8]
+commands = flake8
+
+[testenv:venv]
+commands = {posargs}
+
+[flake8]
+show-source = True
+exclude = .venv,.tox,dist,doc,*egg,build
+