RFR: 7904004: Run jtreg GHA workflows for FreeBSD [v3]

[Christian Stein]

On Wed, 7 May 2025 12:31:11 GMT, snake66 <duke at openjdk.org> wrote:

>> GitHub Actions does not natively support FreeBSD, so we use the vmactions/freebsd-vm action as a base to run the tests in a VM under an Ubuntu runner.
>> 
>> This work is sponsored by The FreeBSD Foundation.
>
> snake66 has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Use $(pwd) for path to checked out source dir

Running for almost an hour now and repeating `VM is booting` over and over. This does not bode well...

![image](https://github.com/user-attachments/assets/18c1a10b-746a-4461-819d-e275736fadbb)

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PR Comment: https://git.openjdk.org/jtreg/pull/262#issuecomment-2858593282