The r8169 enjoys some popularity.
Also, we'd like to be able to try out diskless/cloning with
VMs, so vmxnet3 and virtio_net are handy to round that out.
Organize el8 specific content to separate spaces for future
development of other OS support
Also, make the diskless initramfs a natural result of
dracut activity, so that normal rpm updates and oob driver
installs produce the expected initramfs without further
intervention.
