RFR: 8307305: Update debugger tests to support JTREG_TEST_THREAD_FACTORY mode [v2]

[Chris Plummer]

On Wed, 3 May 2023 02:56:57 GMT, Leonid Mesnik <lmesnik at openjdk.org> wrote:

>> The debugger tests might start all debugee using virtual threads when property "main.wrapper" is set.
>> However, the new mode JTREG_TEST_THREAD_FACTORY do the same thing. The only difference is that it use predefined problemlist names and doesn't set property "main.wrapper" as a part of jtreg properties. So nsk wrapper should set it additionally.
>
> Leonid Mesnik has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Fixed main.wrapper property usage.

Marked as reviewed by cjplummer (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/13763#pullrequestreview-1410164531