kuma
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Improve `AllowWithShadowDeny` (or/and RBAC in general)
Description
Right now AllowWithShadowDeny
is not very useful due to the following:
- ~RBAC filter being applied on the L4 level means that counter is only bumped on new connections, it's a bit hard to correlate a policy change to stats~
- we don't have docs on how to interpret
rbac.shadow_allowed
and we bump that metric - no RBAC stats in our dashboards
- we don't use access_log_hint which could make it easier to inspect interesting requests