Integrated: 8323073: ProblemList gc/g1/TestSkipRebuildRemsetPhase.java on linux-aarch64

[Daniel D. Daugherty]

Trivial fixes to ProblemList a couple of noisy tests:
[JDK-8323073](https://bugs.openjdk.org/browse/JDK-8323073) ProblemList gc/g1/TestSkipRebuildRemsetPhase.java on linux-aarch64
[JDK-8323075](https://bugs.openjdk.org/browse/JDK-8323075) ProblemList runtime/cds/appcds/jigsaw/modulepath/OptimizeModuleHandlingTest.java

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Commit messages:
 - 8323075: ProblemList runtime/cds/appcds/jigsaw/modulepath/OptimizeModuleHandlingTest.java
 - 8323073: ProblemList gc/g1/TestSkipRebuildRemsetPhase.java on linux-aarch64

Changes: https://git.openjdk.org/jdk/pull/17283/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=17283&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8323073
  Stats: 2 lines in 1 file changed: 2 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/17283.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17283/head:pull/17283

PR: https://git.openjdk.org/jdk/pull/17283