[jdk11u-dev] RFR: 8306812: Open source several AWT Miscellaneous tests

[Andrew Lu]

I backport this for parity with 11.0.24-oracle.

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Commit messages:
 - Backport c494770ca0662d95ed35f9244a7a9e012aab61a7

Changes: https://git.openjdk.org/jdk11u-dev/pull/2530/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2530&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8306812
  Stats: 515 lines in 5 files changed: 515 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2530.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2530/head:pull/2530

PR: https://git.openjdk.org/jdk11u-dev/pull/2530