[Rev 03] RFR: 8231692: Test Infrastructure: enhance KeyEventFirer to inject keyEvents into scene

[Jeanette Winzenburg]

The pull request has been updated with additional changes.

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

Added commits:
 - fbdea3df: changed test to compile under oldish junit

Changes:
  - all: https://git.openjdk.java.net/jfx/pull/20/files
  - new: https://git.openjdk.java.net/jfx/pull/20/files/92cd944e..fbdea3df

Webrevs:
 - full: https://webrevs.openjdk.java.net/jfx/20/webrev.03
 - incr: https://webrevs.openjdk.java.net/jfx/20/webrev.02-03

  Issue: https://bugs.openjdk.java.net/browse/JDK-8231692
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/jfx/pull/20.diff
  Fetch: git fetch https://git.openjdk.java.net/jfx pull/20/head:pull/20

PR: https://git.openjdk.java.net/jfx/pull/20