setting /etc/modules in d-i / base-config?
#219290 points out that USB keyboards don't work after reboot,
as the necessary modules aren't loaded properly.
Do we (expect to) prime the /etc/modules on /target in d-i,
in general, eg. for network interfaces, or should kbd-chooser
add the USB modules if it spots a USB keyboard?
This could be a generic issue: eg if a PC has multiple network
cards, and the modules are loaded at boot-time in a different
order to that in d-i, the eth0 / eth1 aliases will be different.