RFR [XS]: jdk11 8244520: problemlist java/awt/font/Rotate/RotatedFontTest.java on linux

[Baesken, Matthias]

Please review this small change. It adds  java/awt/font/Rotate/RotatedFontTest.java to the jdk  ProblemList  (for linux ).
Reason is that the  test   RotatedFontTest.java    ( recently added to jdk11  )  still fails on some Linux machines .
( to track this there is https://bugs.openjdk.java.net/browse/JDK-8244518  )


Bug/webrev :

https://bugs.openjdk.java.net/browse/JDK-8244520

http://cr.openjdk.java.net/~mbaesken/webrevs/8244520_0_jdk11/


Thanks, Matthias