Make the KisDerivedResources test fail properly

It crashed because of an assert in boost when checking for the
opengl version, which is totally irrelevant. So disable opengl
using KisConfig.

This now shows a probable bug:

FAIL!  : KisDerivedResourcesTest::test() Compared values are not the same
   Actual   (spy[2][0].toInt())                              : 6012
   Expected ((int)KisCanvasResourceProvider::LodAvailability): 6010
   Loc: [/home/boud/dev/krita/libs/ui/tests/kis_derived_resources_test.cpp(114)]

CCMAIL:kimageshop@kde.org