tests/qemu: move away from -nic to -netdev
For some reason, on QEmu 7.0, using -nic user,model=virtio-net-pci
creates the right network card, but not internet connectivity...
Removing model=virtio-net-pci
fixes the issue, but so does moving
away from -nic
, and instead use the more verbose -netdev
and
-device
combo. For performance reasons, let's use the latter!