[9] Review Request: 7154054 [macosx] Can't distinguish the focus move to next cell

[Sergey Bylokhov]

Hello.
Please review the fix for jdk 9.
 - Tests were moved to the open repo.
 - MetalLookAndFeel now explicitly set in these tests  + InvokeLater 
was added.

Bug: https://bugs.openjdk.java.net/browse/JDK-7154054
Webrev can be found at: http://cr.openjdk.java.net/~serb/7154054/webrev.01

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Best regards, Sergey.