[jdk11u-dev] RFR: 8306765: Some client related jtreg problem list entries are malformed

[Goetz Lindenmaier]

I backport this for parity with 11.0.21-oracle.

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Commit messages:
 - Backport f02d01934c87414eb610b67bdab55c25b3033878

Changes: https://git.openjdk.org/jdk11u-dev/pull/2226/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2226&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8306765
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2226.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2226/head:pull/2226

PR: https://git.openjdk.org/jdk11u-dev/pull/2226