Comment 6 for bug 1987331

I've reopened this. While the existing PR should help, recent evidence suggests that kubectl pids are being leaked by the auth-webhook when it fetches token secrets[1]. I strongly suspect that the run function's timeout mechanism[2] is leaving behind stale processes.

[1]: https://github.com/charmed-kubernetes/charm-kubernetes-control-plane/blob/9ca52889800937509bd0065d285c6646e04cb745/templates/cdk.master.auth-webhook.py#L347-L349
[2]: https://github.com/charmed-kubernetes/charm-kubernetes-control-plane/blob/9ca52889800937509bd0065d285c6646e04cb745/templates/cdk.master.auth-webhook.py#L52-L61