fix: Use SIGTERM and SIGINT aware context for bootstrap operations

[astefanutti]

Release Note

fix: Use SIGTERM and SIGINT aware context for bootstrap operations

[tadayosi]

Looks great, but may I ask what kind of issues this could solve?

Also, should we extend the same technique for kamel CLI to simplify handling of SIGTERM/SIGINT, for instance in local_run.go?

[astefanutti]

Looks great, but may I ask what kind of issues this could solve?

This fixes graceful termination of the operator pod, whenever it's bootstrapping, either because it has started recently, or the informers are still starting / stuck, and avoids waiting for the termination grace period to expire.

Also, should we extend the same technique for kamel CLI to simplify handling of SIGTERM/SIGINT, for instance in local_run.go?

That's less critical than for the operator IMO, still would be better yes.