Fixes#6585.
I wrote up three suggestions for fixing this at https://github.com/certbot/certbot/issues/6585#issuecomment-448054502. I took the middle approach of requiring the user to provide an ACME server to use. I like this better than the other approaches which were:
> Resolve#5938 instead of this issue.
There is value in these tests as is over the compatibility tests in that they don't use Docker and run on different OSes.
> Spin up a local Python server to return the directory object.
Trying to set up a dummy ACME server seemed hacky and error prone.
Other notes about this PR are:
* I put the Pebble setup in `tox.ini` rather than `.travis.yml` as this seems much cleaner and more natural.
* I created a new `tox` environment called `apacheconftest-with-pebble` that reuses the code from `testenv:apacheconftest` so `apacheconftest` can continue to be used with servers other than Pebble like is done in our test farm tests.
* I chose the environment variable `SERVER` for consistency with our integration tests. I chose to not give this environment variable a default but to fail fast when it is not set.
* I ran test farm tests on this PR and they passed.
Certbot relies heavily on bash scripts to deploy a development environment and to execute tests. This is fine for Linux systems, including Travis, but problematic for Windows machines.
This PR converts all theses scripts into Python, to make them platform independant.
As a consequence, tox-win.ini is not needed anymore, and tox can be run indifferently on Windows or on Linux using a common tox.ini. AppVeyor is updated accordingly to execute tests for acme, certbot and all dns plugins. Other tests are not executed as they are for Docker, unsupported Apache/Nginx/Postfix plugins (for now) or not relevant for Windows (explicit Linux distribution tests or pylint).
Another PR will be done on certbot website to update how a dev environment can be set up.
* Replace several shell scripts by python equivalent.
* Correction on tox coverage
* Extend usage of new python scripts
* Various corrections
* Replace venv construction bash scripts by python equivalents
* Update tox.ini
* Unicode lines to compare files
* Put modifications on letsencrypt-auto-source instead of generated scripts
* Add executable permissions for Linux.
* Merge tox win tests into main tox
* Skip lock_test on Windows
* Correct appveyor config
* Update appveyor.yml
* Explicit coverage py27 or py37
* Avoid to cover non supported certbot plugins on Windows
* Update tox.ini
* Remove specific warnings during CI
* No cover on a debug code for tests only.
* Update documentation and help script on venv/venv3.py
* Customize help message for Windows
* Quote correctly executable path with potential spaces in it.
* Copy pipstrap from upstream
Remove the old bootstrap scripts, which have been subsumed into letsencrypt-auto-source/pieces/bootstrappers. They no longer need to be dispatched among manually: everyone can just run letsencrypt-auto --os-packages-only, regardless of OS.
Make the root-level le-auto a symlink to the canonical version. It should thus still work for people running le-auto from a git checkout.
