update github.com/vishvananda/netlink to v1.3.0

There seems to be one change[1] which breaks our tests, the route Dst field
is no longer nil for a default route but rather the empty ipnet, i.e.
0.0.0.0/0 and ::/0 so fix that up in our code.

[1] https://github.com/vishvananda/netlink/pull/852

Signed-off-by: Paul Holzinger <pholzing@redhat.com>

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

@@ -0,0 +1,34 @@
+package netlink
+
+import "github.com/vishvananda/netlink/nl"
+
+const SOCK_ANY_COOKIE = uint64(nl.TCPDIAG_NOCOOKIE)<<32 + uint64(nl.TCPDIAG_NOCOOKIE)
+
+// XDP diagnosis show flag constants to request particular information elements.
+const (
+	XDP_SHOW_INFO = 1 << iota
+	XDP_SHOW_RING_CFG
+	XDP_SHOW_UMEM
+	XDP_SHOW_MEMINFO
+	XDP_SHOW_STATS
+)
+
+// XDP diag element constants
+const (
+	XDP_DIAG_NONE                 = iota
+	XDP_DIAG_INFO                 // when using XDP_SHOW_INFO
+	XDP_DIAG_UID                  // when using XDP_SHOW_INFO
+	XDP_DIAG_RX_RING              // when using XDP_SHOW_RING_CFG
+	XDP_DIAG_TX_RING              // when using XDP_SHOW_RING_CFG
+	XDP_DIAG_UMEM                 // when using XDP_SHOW_UMEM
+	XDP_DIAG_UMEM_FILL_RING       // when using XDP_SHOW_UMEM
+	XDP_DIAG_UMEM_COMPLETION_RING // when using XDP_SHOW_UMEM
+	XDP_DIAG_MEMINFO              // when using XDP_SHOW_MEMINFO
+	XDP_DIAG_STATS                // when using XDP_SHOW_STATS
+)
+
+// https://elixir.bootlin.com/linux/v6.2/source/include/uapi/linux/xdp_diag.h#L21
+type XDPDiagInfoResp struct {
+	XDPDiagMsg *XDPSocket
+	XDPInfo    *XDPInfo
+}