RFR: 8315981: Opensource five more random Swing tests

[Alexander Zuev]

Clean up and open source five tests:
javax/swing/DefaultListCellRenderer/4180943/bug4180943.java
javax/swing/DefaultListModel/4466250/bug4466250.java
javax/swing/DefaultListSelectionModel/4140619/bug4140619.java
javax/swing/DefaultListSelectionModel/4177723/bug4177723.java
javax/swing/ImageIcon/4827074/bug4827074.java

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Commit messages:
 - 8315981: Opensource five more random Swing tests

Changes: https://git.openjdk.org/jdk/pull/15724/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=15724&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8315981
  Stats: 297 lines in 5 files changed: 297 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/15724.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/15724/head:pull/15724

PR: https://git.openjdk.org/jdk/pull/15724