[jdk17u-dev] RFR: 8286154: Fix 3rd party notices in test files

[Goetz Lindenmaier]

I backport this for parity with 17.0.7-oracle.

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Commit messages:
 - Backport 1277f5d84e9c2863595396a471a61d83f8a0298c

Changes: https://git.openjdk.org/jdk17u-dev/pull/1123/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=1123&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8286154
  Stats: 100 lines in 21 files changed: 64 ins; 0 del; 36 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/1123.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev pull/1123/head:pull/1123

PR: https://git.openjdk.org/jdk17u-dev/pull/1123