RFR: 8306076: Open source AWT misc tests

[Prasanta Sadhukhan]

This opensources few AWT tests

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Commit messages:
 - 8306076: Open source AWT misc tests

Changes: https://git.openjdk.org/jdk/pull/13572/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=13572&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/jdk/pull/13572.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/13572/head:pull/13572

PR: https://git.openjdk.org/jdk/pull/13572