Add EndeavourOS os_family

[droogmic]

EndeavourOS is an Arch family OS.

What does this PR do?

Add support for EndeavourOS is OS Family Map

Previous Behavior

$ sudo salt 'os:EndeavourOS' grains.get os_family
foobar:
    EndeavourOS

New Behavior

$ sudo salt 'os:EndeavourOS' grains.get os_family
foobar:
    Arch

Merge requirements satisfied?

• Changelog - https://docs.saltproject.io/en/master/topics/development/changelog.html

Commits signed with GPG?

Yes

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[MKLeb]

Hi @droogmic , this will need tests and a changelog. Thanks for your contribution!

[welcome]

Congratulations on your first PR being merged! 🎉

[bdrung]

The added test case is broken due to my recent changes in the grains code. Can you update the test case? If not, can you provide the content of /etc/os-release? Then I can fix the test case.

[bdrung]

Commit dab8ea5 changed the parameters for _run_os_grains_tests.

[garethgreenaway]

This should fix things #62790