RFR: JDK-8341278 : Open source few TrayIcon tests - Set7

[Harshitha Onkar]

The following tests are open-sourced. All are manual tests

1. 	test/jdk/java/awt/TrayIcon/ClearPrevImageTest.java 

2. 	test/jdk/java/awt/TrayIcon/FocusLostAfterTrayTest.java 

3. 	test/jdk/java/awt/TrayIcon/MouseMoveTest.java - problemlisted on linux

4. 	test/jdk/java/awt/TrayIcon/RemoveSystemTrayTest.java

5. 	test/jdk/java/awt/TrayIcon/TrayIconKeySelectTest.java - Windows only test and problemlisted on windows as the keyboard actions for trayicon don't work.

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Commit messages:
 - updated lib path
 - tray icon tests

Changes: https://git.openjdk.org/jdk/pull/21365/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=21365&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8341278
  Stats: 656 lines in 6 files changed: 656 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/21365.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/21365/head:pull/21365

PR: https://git.openjdk.org/jdk/pull/21365