RFR (XS) 8208100: compiler/graalunit/JttLangMathALTest.java times out intermittently on Linux-X64

[Ekaterina Pavlova]

Hi All,

compiler/graalunit/JttLangMathALTest.java continues to timeout on slow machines.
Increased default timeout (120 seconds) in twice. Please review.

     JBS: https://bugs.openjdk.java.net/browse/JDK-8208100
  webrev: http://cr.openjdk.java.net/~epavlova/8208100/webrev.00/index.html
testing: Tested by running the test 10 times on all platforms.

  
thanks,
-katya