[jdk11u-dev] RFR: 8281569: Create tests for Frame.setMinimumSize() method

[Goetz Lindenmaier]

I backport this for parity with 11.0.17-oracle

-------------

Commit messages:
 - Backport d0eb6fa2204c4112ef57ffa7579e209ebee62551

Changes: https://git.openjdk.org/jdk11u-dev/pull/1168/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1168&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8281569
  Stats: 185 lines in 2 files changed: 185 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/1168.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev pull/1168/head:pull/1168

PR: https://git.openjdk.org/jdk11u-dev/pull/1168