RFR 8230055: ModuleStressGC.java times out on Win*

[Harold Seigel]

Hi,

Please review this small change to help prevent test 
runtime/modules/ModuleStress/ModuleStressGC.java from timing out. The 
change reduces the number of loop iterations in the test by 40%.

Open Webrev: 
http://cr.openjdk.java.net/~hseigel/bug_8230055/webrev/index.html

JBS Bug: https://bugs.openjdk.java.net/browse/JDK-8230055

The change was tested by running Mach5 tier2 tests on Linux-x64, 
Solaris, Windows, and Mac OS X.

Thanks, Harold