RFR: Cap heap size for TestRegionSizeArgs test

[Roman Kennke]

Am 13.09.2017 um 11:56 schrieb Aleksey Shipilev:
> http://cr.openjdk.java.net/~shade/shenandoah/tests-trgs/webrev.01/
> 
> On large machine that has enormous default heap size, TestRegionSizeArgs begins to timeout. This
> happens for small heap region size settings which yields lots of regions. The startup sequence in
> Shenandoah adds all these regions into the freeset *and* it checks contains() on them in assert,
> which exhibits quadratic behavior.
> 
> Thanks,
> -Aleksey
> 

OK