RFR: 8316400: Exclude jdk/jfr/event/runtime/TestResidentSetSizeEvent.java on AIX

[Christoph Langer]

While folks are working on finding a solution for test jdk/jfr/event/runtime/TestResidentSetSizeEvent.java on AIX, it should be excluded.

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Commit messages:
 - JDK-8316400

Changes: https://git.openjdk.org/jdk/pull/15778/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=15778&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8316400
  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/15778.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/15778/head:pull/15778

PR: https://git.openjdk.org/jdk/pull/15778