retire vineale

Once all lagacy Git repositories have been migrated to GitLab (#41215 (closed)) and the redirections moved to the static mirror system (#41216 (closed)), retire vineale.

1. announcement (TPA-RFC-36)
2. nagios
3. retire the host in fabric
4. remove from LDAP with ldapvi
5. power-grep
6. remove from tor-passwords
7. remove from DNSwl
8. remove from docs (n/a)
9. remove from racks (scheduled by fabric)
10. remove from reverse DNS