ipmi-bt-test: force ipv4

We open ipv4 listening socket. But "localhost" in qemu parameters may
load to Qemu trying to connect with ipv6 and fail with "Connection
refused". Force ipv4 by using ipv4 ip address.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Message-ID: <20231018191123.1176602-1-vsementsov@yandex-team.ru>
Acked-by: Corey Minyard <cminyard@mvista.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>