RFR: 8339638: Update vmTestbase/nsk/jvmti/*Field*Watch tests to use virtual thread factory

[Chris Plummer]

On Fri, 6 Sep 2024 18:56:32 GMT, Leonid Mesnik <lmesnik at openjdk.org> wrote:

> Field watch tests updated to be executed with virtual threads when virtual test thread factory enabled.I added 
> jdk.test.lib.thread.TestThreadFactory
> to created test threads so they support virtual thread factory jtreg plugin.
> 
> It might makes sense to use it in different tests so virtual threads are tests more extensively.
> There is JDIThreadFactory in nsk/sharejdi which I copied. I am going to update JDI tests to use jdk.test.lib.thread.TestThreadFactory
> later.

Other than the copyright fix, looks good.

test/lib/jdk/test/lib/thread/TestThreadFactory.java line 2:

> 1: /*
> 2:  * Copyright (c) 2021, 2024, Oracle and/or its affiliates. All rights reserved.

Should just be 2024.

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PR Review: https://git.openjdk.org/jdk/pull/20897#pullrequestreview-2287057473
PR Review Comment: https://git.openjdk.org/jdk/pull/20897#discussion_r1747644216