Second port-config incident from this rollout: synapse calls MAS's
oauth2/introspect endpoint on port 8080 (not 8081 as assumed) for
every single authenticated request (sync, pushrules, capabilities,
etc). The rule only allowed kube-system (Traefik) on 8080, so every
authenticated API call failed with 503 "Unable to introspect the
access token" - all clients showed a lost connection. Patched live
immediately, this commit brings Git back in sync with that patch.
Thore Cimbal
3054037480