RFR: 8316387: Exclude more failing multicast tests on AIX after JDK-8315651

[Christoph Langer]

On Fri, 15 Sep 2023 21:40:03 GMT, Christoph Langer <clanger at openjdk.org> wrote:

> [JDK-8315651](https://bugs.openjdk.org/browse/JDK-8315651) has removed a facility to hide errors of the type that is described in [JDK-8308807](https://bugs.openjdk.org/browse/JDK-8308807) from the test scaffolding.
> 
> Now we see more multicast tests failing on AIX and we should exclude them with reference to [JDK-8308807](https://bugs.openjdk.org/browse/JDK-8308807).

Thanks for the review, Alan. Those are the additional failing tests that we see. Some others had already been excluded.

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PR Comment: https://git.openjdk.org/jdk/pull/15770#issuecomment-1722316438