RFR: 8318689: jtreg is confused when folder name is the same as the test name

[Weijun Wang]

Rename the test.

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Commit messages:
 - the fix

Changes: https://git.openjdk.org/jdk/pull/16323/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=16323&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8318689
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/16323.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/16323/head:pull/16323

PR: https://git.openjdk.org/jdk/pull/16323