[jdk21u-dev] RFR: 8345055: ProblemList failing rtm tests on ppc platforms

[Matthias Baesken]

Exclude some rtm related test which we see currently failing on some ppc64 platforms.

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Commit messages:
 - JDK-8345055

Changes: https://git.openjdk.org/jdk21u-dev/pull/1183/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1183&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8345055
  Stats: 11 lines in 1 file changed: 0 ins; 0 del; 11 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1183.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1183/head:pull/1183

PR: https://git.openjdk.org/jdk21u-dev/pull/1183