RFR: JDK-8305962: update jcstress to 0.16

Fri Jul 7 18:13:04 UTC 2023

On Fri, 30 Jun 2023 20:09:50 GMT, Leonid Mesnik <lmesnik at openjdk.org> wrote:

> The fix changes jcstress version and update some parameters used by the jtreg wrapper.

Aleksey, thank you for for  useful comments. Our infra is still required to use jtreg wrapper to run jcstress. I verified that it still work.
We are going to vary stress level in testing (with jtreg factor).

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PR Comment: https://git.openjdk.org/jdk/pull/14742#issuecomment-1625784269