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- Move to python 3.6
- Provide context manager for running playbooks,
see: https://gitlab.com/mbukatov/pytest-ansible-playbook/merge_requests/4
- Add runner option ``skip_teardown`` to skip teardown playbooks when test
case fails
- Resolve compatibility issue with pytest 4,
see: https://gitlab.com/mbukatov/pytest-ansible-playbook/issues/6