caddy-frontend: Implement netloc-list

JSON schema uses simple string and internal process, and caddy instances are
not kept simple and are not considered future-proof.
1 job for feature/caddy-frontend-url-netloc-list in 0 seconds (queued for 1 second)
Status Job ID Name Coverage
  External
failed SlapOS.SoftwareReleases.IntegrationTest-luke/feature/caddy-frontend-url-netloc-list

01:06:41