RFR: 8317711: Exclude gtest/GTestWrapper.java on AIX

[Christoph Langer]

We see the failure reported in [JDK-8306561](https://bugs.openjdk.org/browse/JDK-8306561) for gtest/GTestWrapper.java as well.

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Commit messages:
 - JDK-8317711

Changes: https://git.openjdk.org/jdk/pull/16098/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=16098&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8317711
  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/16098.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/16098/head:pull/16098

PR: https://git.openjdk.org/jdk/pull/16098