[jdk17u-dev] RFR: 8306566: Open source several clipboard AWT tests

[kspeeyu]

Backport for [JDK-8306566](https://bugs.openjdk.org/browse/JDK-8306566)
Open source several clipboard AWT tests
New tests all pass except bundles-macos-x64
tier1 tested with GHA
tier2 tested on linux

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Commit messages:
 - Backport cc036eef6307cf34e14563e03eaa749e905d023f

Changes: https://git.openjdk.org/jdk17u-dev/pull/1556/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=1556&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8306566
  Stats: 864 lines in 6 files changed: 864 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/1556.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/1556/head:pull/1556

PR: https://git.openjdk.org/jdk17u-dev/pull/1556