Comment 12 for bug 1226067

I verified this fixes saucy.
$ cat /etc/cloud/build.info
build_name: server
serial: 20130917
$ ifquery --list --all
lo
eth0

$ cat > /tmp/interfaces <<EOF
auto lo
iface lo inet loopback
auto eth1
iface eth1 inet dhcp
iface eth0 inet dhcp

$ ifquery --list --interfaces=/tmp/interfaces
lo
eth1