Print image name on test failure.
Print image name on test failure.

Some ParaView tests produce multiple images and it can be time consuming
to track down which image failed. Let's print the failed image name in
the output.

SimVascular/VTK,jmerkow/VTK,gram526/VTK,keithroe/vtkoptix,candy7393/VTK,sankhesh/VTK,sankhesh/VTK,SimVascular/VTK,msmolens/VTK,gram526/VTK,candy7393/VTK,demarle/VTK,mspark93/VTK,mspark93/VTK,demarle/VTK,jmerkow/VTK,demarle/VTK,sumedhasingla/VTK,sumedhasingla/VTK,demarle/VTK,sumedhasingla/VTK,sankhesh/VTK,sumedhasingla/VTK,gram526/VTK,msmolens/VTK,sankhesh/VTK,gram526/VTK,msmolens/VTK,msmolens/VTK,demarle/VTK,demarle/VTK,keithroe/vtkoptix,SimVascular/VTK,demarle/VTK,keithroe/vtkoptix,sumedhasingla/VTK,candy7393/VTK,candy7393/VTK,mspark93/VTK,keithroe/vtkoptix,gram526/VTK,SimVascular/VTK,msmolens/VTK,gram526/VTK,jmerkow/VTK,sumedhasingla/VTK,sankhesh/VTK,keithroe/vtkoptix,demarle/VTK,SimVascular/VTK,jmerkow/VTK,jmerkow/VTK,SimVascular/VTK,candy7393/VTK,mspark93/VTK,sankhesh/VTK,keithroe/vtkoptix,keithroe/vtkoptix,jmerkow/VTK,candy7393/VTK,sankhesh/VTK,candy7393/VTK,mspark93/VTK,gram526/VTK,mspark93/VTK,sumedhasingla/VTK,sumedhasingla/VTK,sankhesh/VTK,msmolens/VTK,mspark93/VTK,candy7393/VTK,SimVascular/VTK,msmolens/VTK,jmerkow/VTK,jmerkow/VTK,SimVascular/VTK,mspark93/VTK,msmolens/VTK,gram526/VTK,keithroe/vtkoptix