[jdk17u-dev] RFR: 8306372: Open source AWT CardLayout and Checkbox tests

[Goetz Lindenmaier]

I backport this for parity with 17.0.9-oracle.

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Commit messages:
 - Backport 781d6d793ad4cecb774bcbcb362c726779408ffd

Changes: https://git.openjdk.org/jdk17u-dev/pull/1511/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=1511&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8306372
  Stats: 364 lines in 6 files changed: 364 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/1511.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/1511/head:pull/1511

PR: https://git.openjdk.org/jdk17u-dev/pull/1511