Start of QEMU K3s based CI

[richiejp]

One possible way to have CI with GPUs is to setup a VM with k3s and NVIDIA installed. Boot the VM with GPU
passthrough, run the tests, then rollback to a snapshot (delete the overlay we used).

It would be nice to script creating the VMs. Also in cases where VM is not QEMU or is not a VM we can just run
the generic portion of the tests. Copying the docker image into the container runtime is K3s specific, but it
could substituted for a repo.

• script creating the initial VM images and generate SSH keys
• script booting QEMU
• script uploading the image to K3s containerd
• GPU passthrough (will nested virt make it difficult?)
• Integrate into Makefile

#9

[richiejp]

Even without nested virt I have run into a weird issue: https://www.reddit.com/r/VFIO/comments/1c1aynj/qemu_or_ovmf_efi_firmware_hangs_with_no_output/