dns-cloudflare: Implement limited-scope API Tokens (#7583)

A while ago Cloudflare added support for limited-scope API Tokens in place of using a global API key, but support for them in cloudflare/python-cloudflare took a while to get through.

In summary, this PR:
- Implements token functionality through the INI file parameter `dns_cloudflare_api_token` (in addition to the traditional `dns_cloudflare_email` and `dns_cloudflare_api_key`). This needed a more advanced parameter validator than the built in `required_variables` mechanism.
- Updates the docs to reflect the new option, needed token permissions, and version details of the `cloudflare` module

* Update python-cloudflare version

* Add Cloudflare API Token support to certbot-dns-cloudflare

* Add token-specific errors to certbot-dns-cloudflare

* Tidy up certbot-dns-cloudflare

* Implement Cloudflare API Tokens in testing for certbot-dns-cloudflare(needs work)

* Further tidying of certbot-dns-cloudflare

* Update CHANGELOG with Cloudflare API Tokens implementation

* Improve testing of certbot-dns-cloudflare

* Improve certbot-dns-cloudflare test formatting

* Further improve testing for certbot-dns-cloudflare

* Change needed permissions for token

* Add documentation regarding python-cloudflare version

* Fix changelog, references to python-cloudflare and docs

* Fix behaviour when domain does not match cloudflare root domain. Improve error handling.

* Improve testing

* Improve hints and error handling

1 files changed, 1 insertions, 0 deletions

diff --git a/AUTHORS.md b/AUTHORS.md
index d2d5fc2a7..80a24d3be 100644
--- a/AUTHORS.md
+++ b/AUTHORS.md
@@ -36,6 +36,7 @@ Authors
 * [Brad Warren](https://github.com/bmw)
 * [Brandon Kraft](https://github.com/kraftbj)
 * [Brandon Kreisel](https://github.com/kraftbj)
+* [Cameron Steel](https://github.com/Tugzrida)
 * [Ceesjan Luiten](https://github.com/quinox)
 * [Chad Whitacre](https://github.com/whit537)
 * [Chhatoi Pritam Baral](https://github.com/pritambaral)