Nathan Whitehorn 34766aa8cb Fix scripted installs on EFI systems using ZFS root with zfsboot.
Unlike attended installations, scripted installs did not mount non-ZFS
partitions when ZFS root (via zfsboot) was selected. Since this included
the ESP, the EFI loader was not installed. Copy logic from the
attended-install path to make this work.

PR:		255824, 255081
MFC after:	1 week
Obtained from:	Mark Huizer
2021-05-14 08:30:41 -04:00
..
2020-01-15 00:45:05 +00:00