ENH: Remove border properties for the scalarbar representation

Read the property values from the underlying vtkScalarBar actor.
This change fixes issue 14646.

Change-Id: Ic3d836f6420e126c7729f2d1436f34f6151427b3
Merge topic '14646-scalar-bar-borders' into next

dbf4681d ENH: Remove border properties for the scalarbar representation
Fix MPI usage of RGBZ plugin and provide sample test script

Change-Id: Ief0fd00150134a0764055284014cbebd92a572f4
Merge topic 'catalyst-rgbz-plugin' into next

5fe2d442 Fix MPI usage of RGBZ plugin and provide sample test script