RFR: 8336485: jdk/jfr/jcmd/TestJcmdView.java RuntimeException: 'Invoked Concurrent' missing from stdout/stderr

[Erik Gahlin]

Could I have a review of a test fix. 

Testing: 100 * jdk/jdk/jfr/jcmd/TestJcmdView.java

Thanks
Erik

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Commit messages:
 - Initial

Changes: https://git.openjdk.org/jdk/pull/20278/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=20278&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8336485
  Stats: 15 lines in 1 file changed: 10 ins; 0 del; 5 mod
  Patch: https://git.openjdk.org/jdk/pull/20278.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/20278/head:pull/20278

PR: https://git.openjdk.org/jdk/pull/20278