The filenames were mixed up between some of the tests, thus breaking the
purpose of these tests.
Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau.dev@gmail.com>
Remove the file at the beginning of the test, before opening it for
writing, in order to start the test with an empty file system, not only
after flashing the test, but also following every reboot.
Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau.dev@gmail.com>