[jdk17u-dev] RFR: 8332113: Update nsk.share.Log to be always verbose

[Andrew Lu]

I backport this for parity with 17.0.13-oracle.

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Commit messages:
 - Backport 8464ce6db5cbd5d50ac2a2bcba905b7255f510f5

Changes: https://git.openjdk.org/jdk17u-dev/pull/2759/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=2759&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8332113
  Stats: 10 lines in 1 file changed: 0 ins; 4 del; 6 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/2759.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/2759/head:pull/2759

PR: https://git.openjdk.org/jdk17u-dev/pull/2759