TERM signal handling configuration about coraza-spoa

[Tristan971]

Fwiw while a configurable grace period is still preferrable, you can always emulate it at the k8s level using a pre-stop lifecycle on your pod that does something like sleep N.

The pod is immediately put in unready state when the pre-stop begins (like the TERM by default) so removed from the service endpoints, but the pid 1 TERM itself is delayed until the end of the prestop (N seconds in this case).

Then you can truly tweak your grace based on how long your requests can last no matter whether the underlying process has graceful shutdown support