hg: jdk/jdk: 8233018: Add a new test to verify that DatagramSocket is not interruptible

[daniel.fuchs at oracle.com]

Changeset: 17d242844fc9
Author:    pconcannon
Date:      2019-11-27 16:01 +0000
URL:       https://hg.openjdk.java.net/jdk/jdk/rev/17d242844fc9

8233018: Add a new test to verify that DatagramSocket is not interruptible
Summary: Test added to check the interruptability of DatagramSocket, MulticastSocket and DatagramSocketAdaptor.
Reviewed-by: chegar, dfuchs

+ test/jdk/java/net/DatagramSocket/InterruptibleDatagramSocket.java