EnvoyProxy.spec.provider.kubernetes.envoyDeployment.container shutdown-manager resources

*Description*:

TL;DR EnvoyProxy.spec.provider.kubernetes.envoyDeployment.container works for the main container but no way to configure the shutdown-manager sidecar containers resources

https://github.com/envoyproxy/gateway/blob/main/examples/kubernetes/envoy-proxy-config.yaml#L26-L32

You can set the resource requests/limits of the main container to properly schedule the pod. But the shutdown-manager is not configurable, and if you are in per namespace mode, and have a limitrange object (a good idea) that will kick in and cause lots of problems.

There needs to be a way to configure the sidecars resource requests/limits separately from the main containers.