Revert "Switch to new vendor directory layout"

This reverts commit d5742209d3.

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

vendor/github.com/vishvananda/netlink/neigh.go

@@ -1,22 +0,0 @@
-package netlink
-
-import (
-	"fmt"
-	"net"
-)
-
-// Neigh represents a link layer neighbor from netlink.
-type Neigh struct {
-	LinkIndex    int
-	Family       int
-	State        int
-	Type         int
-	Flags        int
-	IP           net.IP
-	HardwareAddr net.HardwareAddr
-}
-
-// String returns $ip/$hwaddr $label
-func (neigh *Neigh) String() string {
-	return fmt.Sprintf("%s %s", neigh.IP, neigh.HardwareAddr)
-}