For the qemu tests this makes no difference as we are anyway forwarding
the ports. But the nspawn tests share the same network namespace between
the image and the ssh client running the test without any forwarding. In
order for that to work we had to modify the image to use a non-standard
port.
We don't want this for two reasons: we want to make sure we test our images
unmodified, and also this meant that when we changed our pipeline generation
we were not verifying that the boot test cases were updated accordingly. As
a result they have now drifted.
Signed-off-by: Tom Gundersen <teg@jklm.no>