RFR: JDK-8305874: Open source AWT Key, Text Event related tests

[Harshitha Onkar]

This PR open sources few AWT Key, Text event related tests.

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

Commit messages:
 - EOF new line added
 - AWT Events tests

Changes: https://git.openjdk.org/jdk/pull/13563/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=13563&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8305874
  Stats: 547 lines in 5 files changed: 547 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/13563.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/13563/head:pull/13563

PR: https://git.openjdk.org/jdk/pull/13563