net: disable TestInterfaceAddrsWithNetsh on windows

Updates #13981.

Change-Id: Id8f3cd56a81a7a993cea5c757e619407da491fed
Reviewed-on: https://go-review.googlesource.com/18710Reviewed-by: Ian Lance Taylor <iant@golang.org>

src/net/net_windows_test.go

@@ -380,6 +380,8 @@ func netshInterfaceIPv6ShowAddress(name string) ([]string, error) {
 }
 
 func TestInterfaceAddrsWithNetsh(t *testing.T) {
+	t.Skip("see https://golang.org/issue/13981")
+
 	if isWindowsXP(t) {
 		t.Skip("Windows XP netsh command does not provide required functionality")
 	}