RFR: 8316462: sun/jvmstat/monitor/MonitoredVm/MonitorVmStartTerminate.java ignores VM flags

[Leonid Mesnik]

Test fixed to accept vm  flags.

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Commit messages:
 - 8316462

Changes: https://git.openjdk.org/jdk/pull/16081/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=16081&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8316462
  Stats: 3 lines in 1 file changed: 0 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/16081.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/16081/head:pull/16081

PR: https://git.openjdk.org/jdk/pull/16081