[jdk11u-dev] RFR: 8306409: Open source AWT KeyBoardFocusManger, LightWeightComponent related tests

[Andrew Lu]

I backport this for parity with 11.0.23-oracle.

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Commit messages:
 - Backport 732179ca84ee1dab6530255c33de7f35cab649c2

Changes: https://git.openjdk.org/jdk11u-dev/pull/2445/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2445&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8306409
  Stats: 615 lines in 6 files changed: 615 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2445.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2445/head:pull/2445

PR: https://git.openjdk.org/jdk11u-dev/pull/2445