XXX caddy-frontend: Switch from Caddy to Haproxy

XXX: checkpoint reached, the frontend-haproxy is able to start, serves nothing
4 jobs for feature/caddy-frontend-haproxy in 0 seconds
Status Job ID Name Coverage
  External
failed SlapOS.SoftwareReleases.IntegrationTest-luke/feature/caddy-frontend-haproxy

03:14:57

failed SlapOS.SoftwareReleases.IntegrationTest-luke/feature/caddy-frontend-haproxy

05:16:20

failed SlapOS.SoftwareReleases.IntegrationTest-luke/feature/caddy-frontend-haproxy

02:51:26

failed SlapOS.SoftwareReleases.IntegrationTest-luke/feature/caddy-frontend-haproxy

05:54:59