Tracking VK changes

[pires]

This is just a way for us to track changes to VK that we'll want to adopt for various reasons, such as reduce boilerplate code, improvements, bugfixes, etc. I'm not expecting this issue to be closed by a PR.

Reduce boilerplate

• nodeutil.NewControllerManager(nodeRunner, pc)(Move some boiler plate startup logic to nodeutil virtual-kubelet#967)