[jdk21u-dev] RFR: 8316446: 4 sun/management/jdp tests ignore VM flags

[Goetz Lindenmaier]

I backport this to keep the 21u test suite up-to-date. This will simplify future test backports.

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Commit messages:
 - Backport 5b311f20dfaed0f34d38e8c5c6b90d97ffc75172

Changes: https://git.openjdk.org/jdk21u-dev/pull/72/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=72&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8316446
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/72.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/72/head:pull/72

PR: https://git.openjdk.org/jdk21u-dev/pull/72