snapd_*_cmdline_args only apply to TrustedAssetsBootloader interface,
that is not implemented by piboot. Also, rename a couple of methods
with better names.
This commit replaces the use of "sanity" with more inclusive
naming. When `// sanity` is used to check if an interface is
implemented the comment `expected interface is implemented`
is used.
Merge pull request #11282 from alfonsosanchezbeato/grub-multiarch
Currently, the grub binary name is always grubx64.efi. However, for
arm64 the usual name is Ubuntu us grubaa64.efi. Make it dependent on
architecture, so one or the other is expected in each case. This will
allow using grub on arm64 systems.
Implement RebootBootloader interface so now piboot does not write the
reboot arguments when kernel is set to "try" state - instead piboot
will return those areguments when required, right before calling
shutdown.
Make the choosing of boot assets dependent dynamically on arch instead
of having static names. This will facilitate overriding by environment
variables if needed in the future.
Use different grub binaries in different architectures, by checking
the grub_cfg variable in the grub recovery script. Also, increase the
config edition for grub-recovery.cfg.
Provide the different names for the assets in snapd by using constants
in files tagged for different architectures.
