RFR: 8340719: Open source AWT List tests

[Prasanta Sadhukhan]

Opensource few AWT List tests...

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Commit messages:
 - Merge master
 - 8340719: Open source AWT List tests

Changes: https://git.openjdk.org/jdk/pull/21253/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=21253&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8340719
  Stats: 412 lines in 5 files changed: 412 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/21253.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/21253/head:pull/21253

PR: https://git.openjdk.org/jdk/pull/21253