[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). ------------- Commit messages: - JDK-8316387 Changes: https://git.openjdk.org/jdk/pull/15770/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=15770&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8316387 Stats: 16 lines in 1 file changed: 10 ins; 5 del; 1 mod Patch: https://git.openjdk.org/jdk/pull/15770.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/15770/head:pull/15770 PR: https://git.openjdk.org/jdk/pull/15770
