Include hostport with kube_pod_info or create a many metric called kube_pod_port

[data-dude]

Could we please add hostPort to kube_pod_info or add a kube_pod_port metric?

This is needed because we would like to see all used hostports in our cluster. These are vulnerable and we should keep an eye on them.

It'd be nice to have a kube_pod_port metric that we could join with kube_pod_info to see all ports and specifically see all pods that are using hostport

[k8s-ci-robot]

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