SSO Keycloak

[darkdragon-001]

Thank you for taking the time to work on a PR for Awesome-Sysadmin!

To ensure your PR is dealt with swiftly please check the following:

• Your additions are Free software
• Software your are submitting is not your own, unless you have a healthy ecosystem with a few contributors (which aren't your sock puppet accounts).
• Submit one item per pull request. This eases reviewing and speeds up inclusion.
• Format your submission as follows, where Demo and Clients are optional.
  Do not add a duplicate Source code link if it is the same as the main link.
  Keep the short description under 80 characters and use sentence case
  for it, even if the project's webpage or readme uses another capitalisation.
  Demo links should only be used for interactive demos, i.e. not video demonstrations.
  - [Name](http://homepage/) - Short description, under 250 characters, sentence case. ([Demo](http://url.to/demo), [Source Code](http://url.of/source/code), [Clients](https://url.to/list/of/related/clients-or-apps)) `License` `Language`
• Additions are inserted preserving alphabetical order.
• Additions are not already listed at awesome-selfhosted
• The Language tag is the main server-side requirement for the software. Don't include frameworks or specific dialects.
• You have searched the repository for any relevant issues or PRs, including closed ones.
• Any category you are creating has the minimum requirement of 3 items (see Add SSO services #409)
• Any software project you are adding to the list is actively maintained.
• The pull request title is informative, unlike "Update README.md".
  Suggested titles: "Add aaa to bbb" for adding software aaa to section bbb,
  "Remove aaa from bbb" for removing, "Fix license for aaa", etc.

---

Why it is awesome

This provider is so awesome because it allows you to maintain a single account but provide many independent services.

[fbartels]

It is probably easier to put the change from this pr and #419 and #420 in a single pr. As soon as one of them is merged there will be a merge conflict in the other two prs that would need fixing/rebase.

[darkdragon-001]

@fbartels That's what I did in #409 which was closed with the request to split it up into separate MRs...

[fbartels]

Ah, i missed that ticket.

[nodiscc]

thanks

[darkdragon-001]

I noticed you were missing the closing mark in your suggestion and only added the opening one.

[darkdragon-001]

I fixed it.