Move Portals to the Attic

1. Confirm Board Resolution
2. Create the project YAML data file in the _data/projects directory in the Attic site. portals.yaml
3. Ensure the: attic.apache.org/projects/portals page has been generated
4. Inform Users of the move to the Attic  
5. Ensure original project site pages carry the Attic banner
6. Ensure the Wiki pages (see links on the portals page) carry the Attic banner
7. Update the project DOAP file (if any) or copy to projects-override
8. Update Social Media (if any)
9. Get infra lock down project's resources INFRA-27358
10. Announce on announce at apache.org

See https://attic.apache.org/process-howto.html for detailed instructions