RFR: 8308935: jdk.management.jfr.RecordingInfo.toString() lacks test coverage

[Erik Gahlin]

Could I have a review of test fix that adds test coverage for the RecordingInfo.toString() method.

Testing: jdk/jdk/jfr/jmx/info/TestRecordingInfo.java

Thanks
Erik

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Commit messages:
 - Initial

Changes: https://git.openjdk.org/jdk/pull/14171/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=14171&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8308935
  Stats: 16 lines in 1 file changed: 16 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/14171.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14171/head:pull/14171

PR: https://git.openjdk.org/jdk/pull/14171