Smallest possible fix for #7106
* Replace platform.linux_dependencies with distro.linux_dependencies
* run build.py
* Add minimum version of 1.0.1
* Pin back requests package
* Update changelog
Dependencies generated by the script introduced with #6839 were not including anymore the fix about enum34 for CentOS 6.
This PR reinserts this fix, and updates the script overrides to ensure that this fix will stay in next dependencies generation.
* Add the environment marker back. Ensure that it will stay by adding an override to dependencies generator.
* Add comments, for future fix
* Update letsencrypt-auto-source/rebuild_dependencies.py
Co-Authored-By: adferrand <adferrand@users.noreply.github.com>
* Update comment
