qemudriver: add support for netdev option in add_port_forward
#1391
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Description
In case there are more
user
network interfaces defined, allow to specific the netdev. If omitted, an empty string is passed and the behaviour is like before.This is useful for testing OpenWrt inside a QEMU instance, since OpenWrt expects by default a LAN interface on eth0 and a WAN interface (with uplink) on eth1. Previously the port forward would always be added to eth1, which doesn't support SSH due to firewall policies. By adding the netdev to the forward function, the SSHDriver works as expected.
Checklist