RFR: 8306322: JDK8130122Test fails intermittently [v2]

[Jayathirth D V]

> This test has failed once and we are not seeing its failure after that instance in our test systems.
> 
> This test verifies whether bounds of GridPane gets updated properly on adding an invisible node.
> Initial test has 8 nodes in GridPane and then we update it with another node with larger bounds without making it visible. After adding additional node we make the scenegraph visible and check for colors of the newly added node.
> 
> We are making this test robust to make sure we don't see any of these single instance failures.
> Test is updated to:
> 1) To always show on top, so that we pick proper color.
> 2) Add additional sleep so that we give more time for test to be visible.
> 3) Pick color exactly at mid point in y axis, so that we pick the green color properly.

Jayathirth D V has updated the pull request incrementally with one additional commit since the last revision:

  Remove setAlwaysOnTop and update wait call

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

Changes:
  - all: https://git.openjdk.org/jfx/pull/1433/files
  - new: https://git.openjdk.org/jfx/pull/1433/files/2c9ed7d9..c4f3b9c6

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jfx&pr=1433&range=01
 - incr: https://webrevs.openjdk.org/?repo=jfx&pr=1433&range=00-01

  Stats: 3 lines in 1 file changed: 0 ins; 1 del; 2 mod
  Patch: https://git.openjdk.org/jfx/pull/1433.diff
  Fetch: git fetch https://git.openjdk.org/jfx.git pull/1433/head:pull/1433

PR: https://git.openjdk.org/jfx/pull/1433