RFR: JDK-8341378 : Open source few TrayIcon tests - Set8

[Harshitha Onkar]

Open sourced `java/awt/TrayIcon/TrayIconTest.java` - Manual test
Problemlisted on all platforms.

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Commit messages:
 - updated lib path
 - TrayIcon test

Changes: https://git.openjdk.org/jdk/pull/21366/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=21366&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8341378
  Stats: 614 lines in 2 files changed: 614 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/21366.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/21366/head:pull/21366

PR: https://git.openjdk.org/jdk/pull/21366