HMS-5923: add support for rhel10

[xbhouse]

Summary

• Adds support for RHEL10 (including extensions channel) and adds EPEL10
• Adds a new manifest that includes these repos

Testing steps

1. Start with a fresh environment to import the new manifest (make compose-clean make compose-up)
2. Run make repos-import && go run cmd/external-repos/main.go process-repos. All repos including RHEL10 should be introspected and snapshotted successfully
3. List the RH repos via API and you should see RHEL10 repos in the response
4. List the popular repositories and you should EPEL10 in the response
5. Sorting (/repositories/?sort_by=distribution_versions:desc&origin=red_hat) and filtering (/repositories/?origin=red_hat&version=10) these repos by version should still work as expected
6. You should be able to create a template with RHEL10 repos, assign it to a RHEL10 client (following these docs), and install packages on the client from those repos

[jlsherrill]

https://issues.redhat.com/browse/HMS-5923

[rverdile]

Tested repositories list with filtering, snapshots list, templates list, and the various content unit searches. Also made a rhel 10 beta system and was able to install rpms from the template.

Looks good! will revisit when this is ready to merge

[jlsherrill]

This is actually available for arm too. The features api seems broken for arm, i'll report that, but i think this should work:

{
        "name":"Red Hat Enterprise Linux 10 for ARM 64 - Extensions (RPMs)",
        "content_label":"rhel-10-for-aarch64-extensions-rpms",
        "url":"https://cdn.redhat.com/content/dist/rhel10/10/aarch64/extensions/os",
        "arch":"aarch64",
        "distribution_version":"10",
        "selector": "rhel10",
        "feature_name":"RHEL-OS-x86_64"
}

[xbhouse]

added!

[jlsherrill]

/retest

[jlsherrill]

one last thing, can you add the appstream and baseos repos to external_repos.json?

EDIT: actually, nevermind, this is handled for us!