Revert "Switch to new vendor directory layout"

This reverts commit d5742209d3.

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

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

@@ -1,64 +0,0 @@
-package netlink
-
-import (
-	"fmt"
-	"syscall"
-)
-
-// Proto is an enum representing an ipsec protocol.
-type Proto uint8
-
-const (
-	XFRM_PROTO_ROUTE2    Proto = syscall.IPPROTO_ROUTING
-	XFRM_PROTO_ESP       Proto = syscall.IPPROTO_ESP
-	XFRM_PROTO_AH        Proto = syscall.IPPROTO_AH
-	XFRM_PROTO_HAO       Proto = syscall.IPPROTO_DSTOPTS
-	XFRM_PROTO_COMP      Proto = syscall.IPPROTO_COMP
-	XFRM_PROTO_IPSEC_ANY Proto = syscall.IPPROTO_RAW
-)
-
-func (p Proto) String() string {
-	switch p {
-	case XFRM_PROTO_ROUTE2:
-		return "route2"
-	case XFRM_PROTO_ESP:
-		return "esp"
-	case XFRM_PROTO_AH:
-		return "ah"
-	case XFRM_PROTO_HAO:
-		return "hao"
-	case XFRM_PROTO_COMP:
-		return "comp"
-	case XFRM_PROTO_IPSEC_ANY:
-		return "ipsec-any"
-	}
-	return fmt.Sprintf("%d", p)
-}
-
-// Mode is an enum representing an ipsec transport.
-type Mode uint8
-
-const (
-	XFRM_MODE_TRANSPORT Mode = iota
-	XFRM_MODE_TUNNEL
-	XFRM_MODE_ROUTEOPTIMIZATION
-	XFRM_MODE_IN_TRIGGER
-	XFRM_MODE_BEET
-	XFRM_MODE_MAX
-)
-
-func (m Mode) String() string {
-	switch m {
-	case XFRM_MODE_TRANSPORT:
-		return "transport"
-	case XFRM_MODE_TUNNEL:
-		return "tunnel"
-	case XFRM_MODE_ROUTEOPTIMIZATION:
-		return "ro"
-	case XFRM_MODE_IN_TRIGGER:
-		return "in_trigger"
-	case XFRM_MODE_BEET:
-		return "beet"
-	}
-	return fmt.Sprintf("%d", m)
-}