[jdk11u-dev] RFR: 8306076: Open source AWT misc tests

[Andrew Lu]

I backport this for parity with 11.0.23-oracle.

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Commit messages:
 - Backport f7d45b85a5c664a87c94e0baccd8b9eddce27e2c

Changes: https://git.openjdk.org/jdk11u-dev/pull/2439/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2439&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8306076
  Stats: 169 lines in 3 files changed: 169 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2439.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2439/head:pull/2439

PR: https://git.openjdk.org/jdk11u-dev/pull/2439