JDK 9 RFR of JDK-8068693/8153209: (ch) test java/nio/channels/AsyncCloseAndInterrupt.java failing

[Hamlin Li]

Would you please review the patch for test 
java/nio/channels/AsyncCloseAndInterrupt.java?

There are 2 test issues, JDK-8068693, JDK-8153209 
(java/nio/channels/AsyncCloseAndInterrupt.java fails throwing exception: 
java.nio.channels.ClosedChannelException).
Root cause:
   for JDK-8068693, 500ms is too short on busy system for channel to be 
closed or for thread blocking on IO to be interrupted.
   for JDK-8153209, it's a test regression due to JDK-8151582 
(http://hg.openjdk.java.net/jdk9/jdk9/jdk/rev/88577677aec9). There is a 
time window between thread ready and io operation ready, deleting the 
original sleep(100) might cause channel closed before accessing the channel.
Suggested Fix:
   for JDK-8068693, increase the time from 500ms to 10000ms.
   for JDK-8153209, do not sleep when running tests for 
CONNECT/FINISH_CONNECT, sleep for other test cases.

bug: https://bugs.openjdk.java.net/browse/JDK-8068693, 
https://bugs.openjdk.java.net/browse/JDK-8153209
webrev: http://cr.openjdk.java.net/~mli/8068693/webrev.00/

Thank you
-Hamlin