RFR: 8378641: Test serviceability/jvmti/RedefineClasses/RedefineVerifyError.java‎ missing UnlockDiagnosticVMOptions after 8376295

[Leonid Mesnik]

Test serviceability/jvmti/RedefineClasses/RedefineVerifyError.java‎ 
updated to use -XX:+UnlockDiagnosticVMOptions

Verified by running test with fastdebug and product build.

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Commit messages:
 - 8378641: Test serviceability/jvmti/RedefineClasses/RedefineVerifyError.java missing UnlockDiagnosticVMOptions after 8376295

Changes: https://git.openjdk.org/jdk/pull/29912/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=29912&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8378641
  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/29912.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/29912/head:pull/29912

PR: https://git.openjdk.org/jdk/pull/29912