Merge "Add tox -eansible-lint support"

.gitignore

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+.tox/

requirements.txt

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+ansible

test-requirements.txt

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+ansible-lint

tox.ini

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+[tox]
+minversion = 1.6
+envlist = ansible-lint
+skipsdist = True
+
+[testenv]
+deps = -r{toxinidir}/requirements.txt
+       -r{toxinidir}/test-requirements.txt
+
+[testenv:ansible-lint]
+whitelist_externals = bash
+commands =
+  bash -c "find . -type f -regex '.*.y[a]?ml' -execdir ansible-lint \{\} \;"
+
+[testenv:venv]
+commands = {posargs}