[jdk11u-dev] RFR: 8268542: serviceability/logging/TestFullNames.java tests only 1st test case

[Goetz Lindenmaier]

I backport this for parity with 11.0.15-oracle.

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Commit messages:
 - Backport 74007890bb9a3fa3a65683a3f480e399f2b1a0b6

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/782/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=782&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8268542
  Stats: 2 lines in 1 file changed: 1 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/782.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/782/head:pull/782

PR: https://git.openjdk.java.net/jdk11u-dev/pull/782