Kubernetes federated testing

[vielmetti]

Track progress of Kubernetes end-to-end testing on arm64.

One recent issue illustrates: https://github.com/kubernetes/kubernetes/issues/25730

Federated testing info: https://github.com/kubernetes/test-infra/blob/master/docs/federated_testing.md

Tracking issue for Kubernetes multi-arch from @luxas https://github.com/kubernetes/kubernetes/issues/38067

[luxas]

I actually experimented with this yesterday, how did you read my mind :stuck_out_tongue_closed_eyes: The doc is really outdated, but I'm working my way through the stack now manually so we can do this super-easily for Packet+other machines to get coverage

[vielmetti]

If you can unwind the stack enough to get a good sense of a next step on Packet let me know and we'll make it happen.

[vielmetti]

Bump this up in priority to prepare for Kubecon.