Revert "Switch to new vendor directory layout"

This reverts commit d5742209d3.

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

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

@@ -1,60 +0,0 @@
-package netlink
-
-import (
-	"fmt"
-	"syscall"
-
-	"github.com/vishvananda/netlink/nl"
-)
-
-func LinkGetProtinfo(link Link) (Protinfo, error) {
-	base := link.Attrs()
-	ensureIndex(base)
-	var pi Protinfo
-	req := nl.NewNetlinkRequest(syscall.RTM_GETLINK, syscall.NLM_F_DUMP)
-	msg := nl.NewIfInfomsg(syscall.AF_BRIDGE)
-	req.AddData(msg)
-	msgs, err := req.Execute(syscall.NETLINK_ROUTE, 0)
-	if err != nil {
-		return pi, err
-	}
-
-	for _, m := range msgs {
-		ans := nl.DeserializeIfInfomsg(m)
-		if int(ans.Index) != base.Index {
-			continue
-		}
-		attrs, err := nl.ParseRouteAttr(m[ans.Len():])
-		if err != nil {
-			return pi, err
-		}
-		for _, attr := range attrs {
-			if attr.Attr.Type != syscall.IFLA_PROTINFO|syscall.NLA_F_NESTED {
-				continue
-			}
-			infos, err := nl.ParseRouteAttr(attr.Value)
-			if err != nil {
-				return pi, err
-			}
-			var pi Protinfo
-			for _, info := range infos {
-				switch info.Attr.Type {
-				case nl.IFLA_BRPORT_MODE:
-					pi.Hairpin = byteToBool(info.Value[0])
-				case nl.IFLA_BRPORT_GUARD:
-					pi.Guard = byteToBool(info.Value[0])
-				case nl.IFLA_BRPORT_FAST_LEAVE:
-					pi.FastLeave = byteToBool(info.Value[0])
-				case nl.IFLA_BRPORT_PROTECT:
-					pi.RootBlock = byteToBool(info.Value[0])
-				case nl.IFLA_BRPORT_LEARNING:
-					pi.Learning = byteToBool(info.Value[0])
-				case nl.IFLA_BRPORT_UNICAST_FLOOD:
-					pi.Flood = byteToBool(info.Value[0])
-				}
-			}
-			return pi, nil
-		}
-	}
-	return pi, fmt.Errorf("Device with index %d not found", base.Index)
-}