caddy-frontend: Encapsulate kedifa-configuration

Instead of passing various kedifa information to the profile generating
configuration use section kedifa-configuration and access later such grouped
values.
2 jobs for feat/theia-version-up
Status Job ID Name Coverage
  External
passed SlapOS.SlapRunner.ResilienceTest-Master

failed SlapOS.SoftwareReleases.IntegrationTest-Master.Python3