RFR: 8288203: runtime/ClassUnload/UnloadTestWithVerifyDuringGC.java fails with release VMs

[Jie Fu]

Hi all,

Please review this trivial patch.
runtime/ClassUnload/UnloadTestWithVerifyDuringGC.java fails with release VMs due to 'VerifyDuringGC' is diagnostic.
So let's move `-XX:+UnlockDiagnosticVMOptions` before 'VerifyDuringGC' to fix it.

Thanks.
Best regards, 
Jie

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Commit messages:
 - 8288203: runtime/ClassUnload/UnloadTestWithVerifyDuringGC.java fails with release VMs

Changes: https://git.openjdk.org/jdk/pull/9125/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=9125&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8288203
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/9125.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/9125/head:pull/9125

PR: https://git.openjdk.org/jdk/pull/9125