CentOS - Jan 2020 - CentOS 8 - auto-loading kickstart from USB doesn't work

While updating my base kickstart for CentOS 8.1, I noticed it won't
auto-load from a USB device.  I'm testing in a VM, but usually add a USB
drive for the ks.cfg because my kickstart skips USB drives when picking
where to install.  If I leave the drive a virtio, or make it a CD, it
works.

I found https://bugzilla.redhat.com/show_bug.cgi?id=1770969 which then
references a RHEL-subscriber-only solution.

-- 
Chris Adams <linux at cmadams.net>