selftests/net: packetdrill: more xfail changes

Most of the packetdrill tests have not flaked once last week.
Add the few which did to the XFAIL list.

Acked-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20250610000001.1970934-1-kuba@kernel.org


Signed-off-by: Jakub Kicinski <kuba@kernel.org>