caddy-frontend: Drop non zero knowledge certificate management

The kedifa way is working for long time and users has been warned about moving
there, so now it's time to drop the insecure approach totally.
1 job for feature/caddy-frontend-name-cleanup
Status Job ID Name Coverage
  External
running SlapOS.SoftwareReleases.IntegrationTest-luke/feature/caddy-frontend-name-cleanup

18024:44:38