hg: openjfx/8/graphics/rt: Gradle: fix test task

[hang . vo]

Changeset: e2faabf0c904
Author:    kcr
Date:      2013-06-25 07:57 -0700
URL:       http://hg.openjdk.java.net/openjfx/8/graphics/rt/rev/e2faabf0c904

Gradle: fix test task

! build.gradle