Update of netlink version

This is required for
https://github.com/containernetworking/cni/issues/251 because version of
netlink used doesn't support creating tap devices.

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

@@ -0,0 +1,40 @@
+package netlink
+
+import (
+	"fmt"
+	"net"
+)
+
+// Rule represents a netlink rule.
+type Rule struct {
+	Priority          int
+	Table             int
+	Mark              int
+	Mask              int
+	TunID             uint
+	Goto              int
+	Src               *net.IPNet
+	Dst               *net.IPNet
+	Flow              int
+	IifName           string
+	OifName           string
+	SuppressIfgroup   int
+	SuppressPrefixlen int
+}
+
+func (r Rule) String() string {
+	return fmt.Sprintf("ip rule %d: from %s table %d", r.Priority, r.Src, r.Table)
+}
+
+// NewRule return empty rules.
+func NewRule() *Rule {
+	return &Rule{
+		SuppressIfgroup:   -1,
+		SuppressPrefixlen: -1,
+		Priority:          -1,
+		Mark:              -1,
+		Mask:              -1,
+		Goto:              -1,
+		Flow:              -1,
+	}
+}