RFR for JDK-8016519. closed/javax/xml/ws/8005432/TestProxyCreation.java uses fixed port to publish webservice

[Patrick Zhang]

Hi Everyone,

I am working on https://bugs.openjdk.java.net/browse/JDK-8016519. The 
test uses fixed port(8080) to publish webservice and it will fail 
periodically  when the port has been occupied by other tests or 
applications.

The fix will use new InetSocketAddress(0).getPort() to retrieve one free 
port.

webrev:
http://cr.openjdk.java.net/~pzhang/8016519/webrev/

result:
http://cr.openjdk.java.net/~pzhang/8016519/TestProxyCreation.jtr

Regards
Patrick