No access rule covered the push route on `metrics.<swarm>`, so a request
there fell to `default_policy = one_factor`: any logged-in session cookie
for the swarm could write samples into VictoriaMetrics.
The name now gets two rules with no `resources`: the collector's client
at `one_factor`, then `deny`. Only the push route and `/metrics` on that
vhost send an authelia subrequest (the read API, Grafana's datasource
included, is served with no check), and the collector is the one caller
of both, so a domain-wide pair covers them with no path or query regex
to slip past. It replaces the per-path `/metrics` pair the published
target would otherwise derive for that name. Both rules sit ahead of the
apex and store-UI rules, and authelia matches `domain` exactly, so they
shadow no other name.
Authelia 4.39.20, read from source: a rule with no `domain` wildcard
matches with `strings.EqualFold` (access_control_domain.go), an empty
`resources` or `subject` list matches everything (access_control_rule.go),
and the first matching rule wins (authorizer.go).
Fixes#5218
223cca2b56