BUG: Fixed bug with respect to Image inhomogeneity; included vtkImageLabelPropagation in SlicerCommonInterFaceTest1 so it would fail as this is also the reason for EMSegCL_Task_MRIHumanBrainFullParcellation_BRAINS_small failing

git-svn-id: http://svn.slicer.org/Slicer4/trunk@23345 3bd1e089-480b-0410-8dfb-8563597acbee