In order to support an early version of virtio-fs, we should package a kernel that supports it. Here are the patches.

There are two options to proceed here:

• We port the patches on top of our 4.19.XX kernel. I'm worried this might be a complex task.
  OR
• We package a special kernel directly out of the virtio-fs branch, applying our kernel config along with the config options required by virtio-fs. We would not need to automate this, it's mostly a matter of getting the kernel manually ready and push it to our package repository.

/cc @egernst @jcvenegas WDYT?