RFR (T/XXS) 8208066: compiler/graalunit/JttThreadsTest.java failed with org.junit.runners.model.TestTimedOutException: test timed out after 20 seconds

[Ekaterina Pavlova]

Hi All,

some org.graalvm.compiler.jtt.threads tests set default timeout by calling createTimeoutSeconds(..).
This default timeout could be not enough on slow machines or when running tests in slow configurations.
Graal unit tests timeout should take into account timeout factor.
Please review this small change which sets Graal unit tests timeout factor based on jtreg harness settings.

     JBS: https://bugs.openjdk.java.net/browse/JDK-8208066
  webrev: http://cr.openjdk.java.net/~epavlova//8208066/webrev.00/index.html
testing: run graalunit tests in default and -Xcomp configurations.

thanks,
-katya