Add a network test that sets up 2 of 4 ehternet devices, and allows another to use dhcp

Signed-off-by: Sven Dowideit <SvenDowideit@home.org.au>

vendor/github.com/vishvananda/netlink/nl/nl_unspecified.go

@@ -0,0 +1,11 @@
+// +build !linux
+
+package nl
+
+import "encoding/binary"
+
+var SupportedNlFamilies = []int{}
+
+func NativeEndian() binary.ByteOrder {
+	return nil
+}