dracut-module/password-agent.c: Skip flaky test on non-AMD64
It is difficult to find a suitable buffer size large enough to predictably make send() fail with EMSGSIZE on a PF_LOCAL socket, while still being small enough to reliably malloc() twice on any platform and in any environment. The existing size was experimentally determined on AMD64; skip the test for all other platforms.
* dracut-module/password-agent.c (test_send_password_to_socket_EMSGSIZE): Skip this test on non-AMD64 platforms.
Closes: 953799 Reported-by: Michael Biebl <biebl@debian.org>