This PR is a new approach for fixing #8732 based on the discussions occurred in the first PR #8877.
This PR upgrades python-augeas to the latest version, and avoids tests failure of Windows because of this upgrade. To do so it leverages the [tox multi-platform feature](https://tox.readthedocs.io/en/latest/example/platform.html) and modifications to `tools/venv.py` in order to not install and not test `certbot-apache` on Windows.
* Unpin python-augeas and upgrade current pinnings
* Do not install certbot-apache in Windows dev environments
* Introduce tox specific win packages + remove certbot compatibility on windows
* Add libaugeas to sphinx build
* Redefine lint and mypy targets
* Keep the lint and mypy environments