[sle][functional][ppc64le] test boots the system too early
The grub_test should only check if grub is shown, entering the passphrase and booting the system should happen in the modules afterwards.
Might be related to the fact that no "Grub" text is shown.
openQA test in scenario sle-15-Leanos-DVD-ppc64le-cryptlvm@ppc64le fails in
Fails since (at least) Build 96.4
Last good: (unknown) (or more recent)
Always latest result in this scenario: latest