8258914: javax/net/ssl/DTLS/RespondToRetransmit.java timed out

Backport-of: b575dd80b6e86821fcf3e065e31c6bddb85db6c4

Author: Andrew Lu

test/jdk/javax/net/ssl/DTLS/RespondToRetransmit.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2016, 2020, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -26,7 +26,8 @@
 
 /*
  * @test
- * @bug 8161086
+ * @bug 8161086 8258914
+ * @key intermittent
  * @summary DTLS handshaking fails if some messages were lost
  * @modules java.base/sun.security.util
  * @library /test/lib