cleanup repos and gpg keys and add el8 stuff

etc/pki/rpm-gpg/RPM-GPG-KEY-AlmaLinux

etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7

etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-Debug-7

etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-Testing-7

etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7

etc/pki/rpm-gpg/RPM-GPG-KEY-OSG

etc/pki/rpm-gpg/RPM-GPG-KEY-OSG-2

etc/pki/rpm-gpg/RPM-GPG-KEY-xrootd

etc/yum.repos.d/CentOS-Base.repo

etc/yum.repos.d/CentOS-CR.repo

etc/yum.repos.d/CentOS-Debuginfo.repo

etc/yum.repos.d/CentOS-Media.repo

etc/yum.repos.d/CentOS-Sources.repo

etc/yum.repos.d/CentOS-Vault.repo

etc/yum.repos.d/CentOS-fasttrack.repo

etc/yum.repos.d/CentOS-x86_64-kernel.repo

etc/yum.repos.d/almalinux-ha.repo

etc/yum.repos.d/almalinux-nfv.repo

etc/yum.repos.d/almalinux-plus.repo

etc/yum.repos.d/almalinux-powertools.repo