Add tox.ini and ansible-lint cleanup

Signed-off-by: Paul Belanger <pabelanger@redhat.com>

.gitignore

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+.tox/

requirements.txt

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+ansible

test-requirements.txt

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+ansible-lint
+hacking<0.11,>=0.10

tox.ini

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+[tox]
+minversion = 1.6
+envlist = ansible-lint,pep8
+skipsdist = True
+
+[testenv]
+deps = -r{toxinidir}/requirements.txt
+       -r{toxinidir}/test-requirements.txt
+
+[testenv:ansible-lint]
+setenv =
+  ANSIBLE_CONFIG = tests/ansible.cfg
+whitelist_externals = bash
+commands =
+  bash -c "find . -type f -regex '.*.y[a]?ml' -print0 | xargs -t -n1 -0 \
+    ansible-lint"
+  bash -c "find tests -type f -regex '.*.y[a]?ml' -print | xargs -t -n1 \
+    ansible-playbook --syntax-check -i tests/inventory \
+    -e rolename=$(basename $(pwd)) > /dev/null"
+
+[testenv:ansible-functional]
+commands =
+  ansible-playbook -i tests/inventory tests/test.yaml
+passenv = HOME
+setenv =
+  ANSIBLE_CONFIG = {toxinidir}/tests/ansible.cfg
+  PYTHONUNBUFFERED = 1
+
+[testenv:pep8]
+commands = flake8
+
+[testenv:venv]
+commands = {posargs}