test/py: efi_capsule: repair image authentication test
Repair the python tests for authenticated EFI capsules, which can be run
with sandbox_defconfig plus CONFIG_EFI_CAPSULE_AUTHENTICATE=y.
- Account for the reset changes done by commit
55280559e622 ("efi_loader:
test/py: Reset system after capsule update on disk").
- Fix the capsule GUID typo introduced by commit
adde31b63978 ("test:
capsule: Modify the capsule tests to use GUID values for sandbox").
Signed-off-by: Vincent Stehlé <vincent.stehle@arm.com>
Cc: Heinrich Schuchardt <xypron.glpk@gmx.de>