hg: jdk/sandbox: Add test for Socket to UDP socket

[alan.bateman at oracle.com]

Changeset: a2529b040b48
Author:    alanb
Date:      2019-02-21 20:20 +0000
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/a2529b040b48

Add test for Socket to UDP socket

+ test/jdk/java/net/Socket/UdpSocket.java