test/py: test reboot by EFI watchdog

Clear environment variable efi_selftest before executing the
default tests.

Provide a test verifying that the EFI watchdog
reboots the system upon timeout.

The test depends on CONFIG_CMD_EFI_SELFTEST=y.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
1 file changed