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/inet_diag.go

@@ -21,6 +21,10 @@ const (
 	INET_DIAG_BBRINFO
 	INET_DIAG_CLASS_ID
 	INET_DIAG_MD5SIG
+	INET_DIAG_ULP_INFO
+	INET_DIAG_SK_BPF_STORAGES
+	INET_DIAG_CGROUP_ID
+	INET_DIAG_SOCKOPT
 	INET_DIAG_MAX
 )
 
@@ -29,3 +33,8 @@ type InetDiagTCPInfoResp struct {
 	TCPInfo     *TCPInfo
 	TCPBBRInfo  *TCPBBRInfo
 }
+
+type InetDiagUDPInfoResp struct {
+	InetDiagMsg *Socket
+	Memory      *MemInfo
+}