RFR: 8296405: java/util/concurrent/forkjoin/AsyncShutdownNow.java is too slow

[Alan Bateman]

java/util/concurrent/forkjoin/AsyncShutdownNow.java takes ~40s as each test uses a delay of 5s before it invokes shutdownNow. The test will run in <1s if changed to poll the thread state and invoke shutdownNow when the thread waits.

The update temporarily disables testInvokeAny because of a suspected issue doing shutdown at around the same that worker threads are spinning up. It duplicates more frequently (on Windows at least) with the updated test. JDK-8286352 and JDK-8288899 are two bugs on this issue. Doug Lea is looking into the issue. The test can be re-enabled when that issue is resolved.

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Commit messages:
 - Disable testInvokeAny
 - Merge
 - Initial commit

Changes: https://git.openjdk.org/jdk/pull/10986/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=10986&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8296405
  Stats: 108 lines in 1 file changed: 50 ins; 41 del; 17 mod
  Patch: https://git.openjdk.org/jdk/pull/10986.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/10986/head:pull/10986

PR: https://git.openjdk.org/jdk/pull/10986