RFR: 8333446: Add tests for hierarchical container support

[Severin Gehwolf]

On Mon, 3 Jun 2024 17:28:09 GMT, Severin Gehwolf <sgehwolf at openjdk.org> wrote:

> Please review this PR which adds test support for systemd slices so that bugs like [JDK-8217338](https://bugs.openjdk.org/browse/JDK-8217338) can be verified. The added test, `SystemdMemoryAwarenessTest` currently passes on cgroups v1 and fails on cgroups v2 due to the way how [JDK-8217338](https://bugs.openjdk.org/browse/JDK-8217338) was implemented when JDK 13 was a thing. Therefore immediately problem-listed. It should get unlisted once [JDK-8322420](https://bugs.openjdk.org/browse/JDK-8322420) merges.
> 
> I'm adding those tests in order to not regress another time.
> 
> Testing:
> - [x] Container tests on Linux x86_64 cgroups v2 and Linux x86_64 cgroups v1.
> - [x] New systemd test on cg v1 (passes). Fails on cg v2 (due to  JDK-8322420)
> - [x] GHA

GHA failure of macos-x64 seems infra related and not related to this patch.

-------------

PR Comment: https://git.openjdk.org/jdk/pull/19530#issuecomment-2147097626