Servo provides usb interface which causes the network bridge script to fail to find the non USB network.

Extend the list to look at more networks for the non USB one.

moblab@localhost /etc/init $ ls -l /sys/class/net
total 0
lrwxrwxrwx 1 root root 0 May 19 15:54 eth0 -> ../../devices/pci0000:00/0000:00:14.0/usb2/2-1/2-1:2.0/net/eth0
lrwxrwxrwx 1 root root 0 May 19 15:54 eth1 -> ../../devices/pci0000:00/0000:00:14.0/usb2/2-4/2-4.1/2-4.1:1.0/net/eth1
lrwxrwxrwx 1 root root 0 May 19 15:54 eth2 -> ../../devices/pci0000:00/0000:00:1c.0/0000:01:00.0/net/eth2
lrwxrwxrwx 1 root root 0 May 19 15:54 lo -> ../../devices/virtual/net/lo
lrwxrwxrwx 1 root root 0 May 19 15:54 wlan0 -> ../../devices/pci0000:00/0000:00:1c.1/0000:02:00.0/net/wlan0