add zuul jobs (#1)

Enable zuul jobs

Reviewed-by: OpenTelekomCloud Bot <None>
Reviewed-by: Vladimir Hasko <vladimirhasko@gmail.com>

tox.ini

@@ -0,0 +1,40 @@
+[tox]
+minversion = 3.6
+envlist = pep8
+skipsdist = True
+ignore_basepython_conflict = True
+
+[testenv]
+usedevelop = True
+install_command = pip install {opts} {packages}
+setenv =
+    VIRTUAL_ENV={envdir}
+    LANG=en_US.UTF-8
+    LANGUAGE=en_US:en
+    LC_ALL=C
+deps =
+    -r{toxinidir}/requirements.txt
+    -r{toxinidir}/test-requirements.txt
+
+[testenv:pep8]
+commands =
+    flake8
+
+[testenv:venv]
+deps =
+    -r{toxinidir}/requirements.txt
+    -r{toxinidir}/test-requirements.txt
+commands = {posargs}
+
+[flake8]
+# The following are ignored on purpose. It's not super worth it to fix them.
+# However, if you feel strongly about it, patches will be accepted to fix them
+# if they fix ALL of the occurances of one and only one of them.
+# H306 Is about alphabetical imports - there's a lot to fix.
+# H4 Are about docstrings and there's just a huge pile of pre-existing issues.
+# W503 Is supposed to be off by default but in the latest pycodestyle isn't.
+#      Also, both openstacksdk and Donald Knuth disagree with the rule. Line
+#      breaks should occur before the binary operator for readability.
+ignore = H306,H4,W503
+show-source = True
+exclude=.venv,.git,.tox,dist,doc,*lib/python*,*egg,build