[graphics/krita] /: Allow tests access to resources

[Boudewijn Rempt]

The following tests fail in master:

         24 - libs-flake-TestKoShapeRegistry (Failed)
         49 - libs-pigment-TestKoColorSpaceAbstract (Failed)
         54 - libs-pigment-KoRgbU8ColorSpaceTester (Failed)
         65 - libs-brush-kis_imagepipe_brush_test (Failed)
         66 - libs-brush-TestAbrStorage (Failed)
        132 - libs-image-kis_filter_weights_applicator_test (Failed)
        149 - libs-image-kis_transform_worker_test (Failed)
        151 - libs-image-kis_projection_leaf_test (Failed)
        157 - libs-image-kis_cage_transform_worker_test (Failed)
        161 - libs-image-kis_asl_layer_style_serializer_test (Child aborted)
        194 - libs-ui-KisManualUpdaterTest (Child aborted)
        206 - libs-libkis-TestNode (Failed)
        214 - libs-kritaresources-TestFolderStorage (Failed)
        218 - libs-kritaresources-TestResourceModel (Child aborted)
        253 - plugins-tools-basictools-MoveSelectionStrokeTest (Child aborted)
        255 - plugins-tooltransform-test_animated_transform_parameters (Failed)

The two kritaresources tests are fixed in the model rewrite branch; the other tests look like real failures.