mock-core-configs-33.1-1

• ELN fixups ([email protected])
• EPEL: fix repo-id and name=
• Add missing repos to CentOS 6 and CentOS 7 configs
• Do --disablerepo=centos-sclo* in templates
• Add plain CentOS 6/7/8 configs (without epel)
• EPEL Playground depends on normal EPEL