
BUG:  Fix OSCone-image, OSConePython tests on X11.

candy7393/VTK,arnaudgelas/VTK,gram526/VTK,berendkleinhaneveld/VTK,SimVascular/VTK,Wuteyan/VTK,gram526/VTK,arnaudgelas/VTK,jeffbaumes/jeffbaumes-vtk,keithroe/vtkoptix,keithroe/vtkoptix,demarle/VTK,demarle/VTK,sankhesh/VTK,aashish24/VTK-old,msmolens/VTK,msmolens/VTK,mspark93/VTK,ashray/VTK-EVM,aashish24/VTK-old,sankhesh/VTK,daviddoria/PointGraphsPhase1,keithroe/vtkoptix,biddisco/VTK,daviddoria/PointGraphsPhase1,johnkit/vtk-dev,Wuteyan/VTK,hendradarwin/VTK,sumedhasingla/VTK,msmolens/VTK,naucoin/VTKSlicerWidgets,naucoin/VTKSlicerWidgets,demarle/VTK,sumedhasingla/VTK,sumedhasingla/VTK,cjh1/VTK,keithroe/vtkoptix,biddisco/VTK,gram526/VTK,mspark93/VTK,johnkit/vtk-dev,mspark93/VTK,ashray/VTK-EVM,keithroe/vtkoptix,collects/VTK,gram526/VTK,sankhesh/VTK,ashray/VTK-EVM,jmerkow/VTK,SimVascular/VTK,ashray/VTK-EVM,cjh1/VTK,Wuteyan/VTK,collects/VTK,arnaudgelas/VTK,hendradarwin/VTK,demarle/VTK,spthaolt/VTK,keithroe/vtkoptix,ashray/VTK-EVM,demarle/VTK,naucoin/VTKSlicerWidgets,candy7393/VTK,jeffbaumes/jeffbaumes-vtk,cjh1/VTK,spthaolt/VTK,naucoin/VTKSlicerWidgets,berendkleinhaneveld/VTK,mspark93/VTK,candy7393/VTK,jmerkow/VTK,Wuteyan/VTK,sankhesh/VTK,sankhesh/VTK,Wuteyan/VTK,candy7393/VTK,hendradarwin/VTK,jeffbaumes/jeffbaumes-vtk,jmerkow/VTK,berendkleinhaneveld/VTK,msmolens/VTK,Wuteyan/VTK,sumedhasingla/VTK,jeffbaumes/jeffbaumes-vtk,msmolens/VTK,arnaudgelas/VTK,jmerkow/VTK,jmerkow/VTK,gram526/VTK,cjh1/VTK,keithroe/vtkoptix,biddisco/VTK,aashish24/VTK-old,Wuteyan/VTK,ashray/VTK-EVM,ashray/VTK-EVM,arnaudgelas/VTK,hendradarwin/VTK,jmerkow/VTK,jeffbaumes/jeffbaumes-vtk,mspark93/VTK,berendkleinhaneveld/VTK,sumedhasingla/VTK,msmolens/VTK,keithroe/vtkoptix,berendkleinhaneveld/VTK,jeffbaumes/jeffbaumes-vtk,msmolens/VTK,collects/VTK,jmerkow/VTK,SimVascular/VTK,SimVascular/VTK,biddisco/VTK,arnaudgelas/VTK,SimVascular/VTK,sumedhasingla/VTK,spthaolt/VTK,gram526/VTK,cjh1/VTK,SimVascular/VTK,collects/VTK,johnkit/vtk-dev,hendradarwin/VTK,daviddoria/PointGraphsPhase1,gram526/VTK,johnkit/vtk-dev,msmolens/VTK,hendradarwin/VTK,biddisco/VTK,johnkit/vtk-dev,hendradarwin/VTK,biddisco/VTK,spthaolt/VTK,johnkit/vtk-dev,daviddoria/PointGraphsPhase1,candy7393/VTK,naucoin/VTKSlicerWidgets,biddisco/VTK,aashish24/VTK-old,candy7393/VTK,spthaolt/VTK,spthaolt/VTK,demarle/VTK,berendkleinhaneveld/VTK,sumedhasingla/VTK,daviddoria/PointGraphsPhase1,collects/VTK,johnkit/vtk-dev,mspark93/VTK,sankhesh/VTK,gram526/VTK,ashray/VTK-EVM,aashish24/VTK-old,aashish24/VTK-old,collects/VTK,mspark93/VTK,candy7393/VTK,sankhesh/VTK,demarle/VTK,jmerkow/VTK,spthaolt/VTK,candy7393/VTK,SimVascular/VTK,demarle/VTK,sankhesh/VTK,SimVascular/VTK,mspark93/VTK,sumedhasingla/VTK,berendkleinhaneveld/VTK,daviddoria/PointGraphsPhase1,cjh1/VTK,naucoin/VTKSlicerWidgets