RFR: 8343505: Problemlist AttachTest.java and TestZPageAllocationEvent.java

[SendaoYan]

Hi all,
To make less CI noisy, before the root cause of [JDK-8343244](https://bugs.openjdk.org/browse/JDK-8343244) has fixed, should we problemlist the failure tests, include AttachTest.java and TestZPageAllocationEvent.java

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Commit messages:
 - 8343244: Problemlist AttachTest.java and TestZPageAllocationEvent.java

Changes: https://git.openjdk.org/jdk/pull/21917/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=21917&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8343505
  Stats: 4 lines in 1 file changed: 4 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/21917.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/21917/head:pull/21917

PR: https://git.openjdk.org/jdk/pull/21917