Need source repos added to Ark

[sjpb]

The slurm package rebuild requires source images, which aren't in Ark.

Example config using the baseurls:

dnf_repos_extra_repolist:
  - file: epel
    name: epel-source
    base_url: https://dl.fedoraproject.org/pub/epel/9/Everything/source/tree
  - file: rocky
    name: baseos-source
    base_url: https://dl.rockylinux.org/$contentdir/$releasever/BaseOS/source/tree/
  - file: rocky
    name: appstream-source
    base_url: https://dl.rockylinux.org/$contentdir/$releasever/AppStream/source/tree/
  - file: rocky
    name: crb-source
    base_url: https://dl.rockylinux.org/$contentdir/$releasever/CRB/source/tree/
  - file: rocky-extras
    name: extras-source
    base_url: https://dl.rockylinux.org/$contentdir/$releasever/extras/source/tree/