Comment # 14 on bug 1231271 from Guillaume GARDET

Still failing on aarch64:
https://build.opensuse.org/package/live_build_log/openSUSE:Factory:ARM/kiwi-templates-Minimal:kvm-and-xen-grub-bls/images/aarch64

Error log:
[   68s] [ INFO    ]: 17:07:10 | Calling disk.sh script
[   68s] [ DEBUG   ]: 17:07:10 | --------------out start-------------
[   68s] [ DEBUG   ]: 17:07:10 | ####### BOOTLOADER INSTALL (disk.sh)
[   68s] [ DEBUG   ]: 17:07:10 | sdbootutil-1+git20241004.a1bb60f-1.1.aarch64
[   68s] [ DEBUG   ]: 17:07:10 | install boot loader
[   69s] [ DEBUG   ]: 17:07:10 | package systemd-boot is not installed
[   69s] [ DEBUG   ]: 17:07:10 | Installing grub2-bls with shim into /boot/efi
[   69s] [ DEBUG   ]: 17:07:10 | --------------out stop--------------
[   69s] [ DEBUG   ]: 17:07:10 | --------------err start-------------
[   69s] [ DEBUG   ]: 17:07:10 | + '[' -x /usr/bin/sdbootutil ']'
[   69s] + echo '####### BOOTLOADER INSTALL (disk.sh)'
[   69s] + rpm -q sdbootutil
[   69s] ++ uname -m
[   69s] + arch=aarch64
[   69s] + case "$arch" in
[   69s] + arch=aa64
[   69s] + echo 'install boot loader'
[   69s] + loader_type=grub2-bls
[   69s] + rpm -q systemd-boot
[   69s] + '[' -f /etc/sysconfig/bootloader ']'
[   69s] + sed -i 's/^LOADER_TYPE=.*$/LOADER_TYPE="grub2-bls"/g'
/etc/sysconfig/bootloader
[   69s] + sdbootutil -v --no-random-seed --arch aa64 --esp-path /boot/efi
--entry-token=auto --no-variables install
[   69s] install: cannot stat '/usr/share/grub2/aarch64-efi/grubbls.efi': No
such file or directory
[   69s] 
[   69s] [ DEBUG   ]: 17:07:10 | --------------err stop--------------