RFR: 8370120: Make jpackage tests output more stable

[Alexander Matveev]

On Fri, 17 Oct 2025 17:20:01 GMT, Alexey Semenyuk <asemenyuk at openjdk.org> wrote:

> - Make jpackage tests output more stable.
>  - Make jpackage output more stable.
>  - Add more action to the script derandomizing jpackage test logs.

Looks good overall with minor comments.

test/jdk/tools/jpackage/clean_test_output.sh line 105:

> 103:       -e 's|taskkill /F /PID [0-9]\{1,\}|taskkill /F /PID <pid>|'
> 104: 
> 105:       # Convert PID value in `The process with PID 5640 has been terminated`

I am confused with this comment. Should we use something more generic then 5640. Same below for 57182ms.

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PR Review: https://git.openjdk.org/jdk/pull/27870#pullrequestreview-3352415380
PR Review Comment: https://git.openjdk.org/jdk/pull/27870#discussion_r2441473583