RFR[14] JDK-8231810: javax/net/ssl/templates/SSLSocketSSLEngineTemplate.java fails intermittently with "java.lang.Exception: Unexpected EOF"

[sha.jiang at oracle.com]

Hi,
When the server socket in this test tries to receive close_notify, 
possibly the client socket is (being) closed.

Without this patch, this failure was easily reproduced by running the 
test in a loop.
With this patch, I didn't reproduce it in the same way.

Issue: https://bugs.openjdk.java.net/browse/JDK-8231810
Webrev: http://cr.openjdk.java.net/~jjiang/8231810/webrev.00/

Best regards,
John Jiang