[jdk11u-dev] RFR: 8306484: Open source several AWT Choice jtreg tests

[Goetz Lindenmaier]

I backport this for parity with 11.0.21-oracle.

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Commit messages:
 - Backport b5362dadc59570d1f7fd7899be5ec11187168a16

Changes: https://git.openjdk.org/jdk11u-dev/pull/2009/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2009&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8306484
  Stats: 1048 lines in 6 files changed: 1048 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2009.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2009/head:pull/2009

PR: https://git.openjdk.org/jdk11u-dev/pull/2009