This will allow the `fedora-rpi-common.ks` kickstart fragment to be more
composeable, making it usable for systems other than "servers" that may
need a different disk layout.
Machines that use eMMC/SD cards for OS storage need a slightly different
disk layout than those with nVME drives. Notably, we do not want swap
or `/tmp` on the eMMC, as that will not really improve performance at
all and will be hard on the flash memory.
For NVMe, there are two options available, with and without a swap
volume.
On machines without an RTC, the clock will likely be very wrong on first
boot when system tries to obtain the initial SSH host certificates.
This results in the SSHCA server rejecting the request because the
authorization token has expired. To avoid this, we need to ensure the
clock is set before attempting to have the certificates signed.
Dustin