[Windows] Security model for files permissions - STEP 3d (#6968)

* Implement security.mkdir and security.makedirs

* Fix lint

* Correct mock

* Rename security into filesystem

* Update apache and nginx plugins requirements

* Update certbot/plugins/webroot.py

Co-Authored-By: ohemorange <ebportnoy@gmail.com>

* Reenable pylint here

* Move code

* Reimplement mkdir

* Control errors on eexist, remove superfluous chmod for makedirs

* Add proper skip for windows only tests

* Fix lint

* Fix mypy

* Clean code

* Adapt coverage threshold on Linux with addition of LOC specific to Windows

* Add forbiden functions to tests

* Update certbot/compat/os.py

Co-Authored-By: ohemorange <ebportnoy@gmail.com>

* Simplify code

* Sync _get_current_user with part3c

* Use the simpliest implementation

* Remove exist_ok, simplify code.

* Simplify inline comment

* Update filesystem_test.py

* Update certbot/compat/os.py

Co-Authored-By: ohemorange <ebportnoy@gmail.com>

* Update certbot/plugins/webroot.py

Co-Authored-By: ohemorange <ebportnoy@gmail.com>

* Update certbot/plugins/webroot.py

Co-Authored-By: ohemorange <ebportnoy@gmail.com>

* Add a test to check we set back os.mkdir correctly after filesystem.makedirs is called.

* Fix lint, adapt coverage

certbot-nginx/local-oldest-requirements.txt

@@ -1,3 +1,3 @@
 # Remember to update setup.py to match the package versions below.
 acme[dev]==0.29.0
-certbot[dev]==0.34.0
+-e .[dev]