[jdk21u-dev] RFR: 8326611: Clean up vmTestbase/nsk/stress/stack tests

[Andrew Lu]

I backport this for parity with 21.0.5-oracle.

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Commit messages:
 - Backport 972e81d1adb232b02114a5260d06144eb5b08849

Changes: https://git.openjdk.org/jdk21u-dev/pull/958/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=958&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8326611
  Stats: 5086 lines in 41 files changed: 2259 ins; 2825 del; 2 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/958.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/958/head:pull/958

PR: https://git.openjdk.org/jdk21u-dev/pull/958