Update tests that render lines along with their baselines

Set multi samples to 0 to avoid using anti-aliasing since not
all machines support it. This is needed when rendering lines.
The result is consistent on all machines.

Filters/CellGrid/Testing/Data/Baseline/TestCellGridCellCenters-Cells.png.sha512

-b40197e4e71dba28f96f67c71abef6a064ca0b0be16f1df4bcf7aed4fc3e44bb855385fae2b6094fd8dd131a4e04f4e6b670a6cb397db122094e386c3b6b6b69
+b5de0f8a7b7abb8ad81fe26ff4bd06be2c55fac3f4580626cafeae0091b5d6a0efb3ed950c3a83a67144df384cc2cad041a71a08a9e04c34894dcb57323abc0a

Filters/CellGrid/Testing/Data/Baseline/TestCellGridTransform-HCurl.png.sha512

-1444075746eca4a816a3f79c1b03f99ae0590068038463f12ec581c3b45dca5193e1ac8f2412b84a134de53091e27c059a698cda085e5a7bfcc169f5a4c25d74
+9a4c3822ff82e46c280f8ae9d50639dacff48050a807be2534bc32d7913b45d8d49766e7478661498cc1e7a6a37e1c210ce9323ad1900e6435e6b45419e75447

Filters/CellGrid/Testing/Data/Baseline/TestCellGridTransform-HDiv.png.sha512

-ba96f18415e05d044aec6453e8182aa31c361bc164264cc8dafad0050116b69ca2a6565985b306ba7b0aa5a7b35a9d2be6062935a07d70b559c9d9c77bda3441
+3040926ca02fee1d9c64dd7ee7512fa34cc129ce54585fad95e6b2a4bcd17e71c63f7530386a43303fa2a7bfc038bb455c6a89a7b42a58d0b7b56a17db6f225f

Filters/CellGrid/Testing/Python/TestCellGridCellCenters.py

@@ -86,6 +86,7 @@ class TestCellGridCellCenters(Testing.vtkTest):
         ren.AddActor(centerActor)
 
         rw = vtkRenderWindow()
+        rw.SetMultiSamples(0)  # when rendering lines ensure same output since anti-aliasing is not supported on all machines
         rw.AddRenderer(ren)
         ren.SetBackground(1.0, 1.0, 1.0)
         #ren.SetBackground(0.5, 0.4, 0.3)

Filters/CellGrid/Testing/Python/TestCellGridTransform.py

@@ -83,6 +83,7 @@ class TestCellGridTransform(Testing.vtkTest):
         ren.AddActor(glyphActor)
 
         rw = vtkRenderWindow()
+        rw.SetMultiSamples(0)  # when rendering lines ensure same output since anti-aliasing is not supported on all machines
         rw.AddRenderer(ren)
         ren.SetBackground(1.0, 1.0, 1.0)
 

Filters/Core/Testing/Data/Baseline/contourQuadraticTetra.png.sha512

-c22735aacca486eb356bfbab7c5e20033d894b9575094b8cea65d9a8f9f5558a4664bf1744a2388846c1696fd5133ada8c79de75cc4572fe9d930f64434b22c2
+6076464da2cb3aaa38a0bf82f0315d3283aba34b4e17315f74e43e36ffdfe244275799ae732010b8a212d525f1ed4db863926f31b7259c39f9670240f8d7cc20

Filters/Core/Testing/Python/contourQuadraticTetra.py

@@ -49,6 +49,7 @@ class contourQuadraticTetra(vtkmodules.test.Testing.vtkTest):
         ren1 = vtkRenderer()
         ren1.GetCullers().RemoveAllItems()
         renWin = vtkRenderWindow()
+        renWin.SetMultiSamples(0) # when rendering lines ensure same output since anti-aliasing is not supported on all machines
         renWin.AddRenderer(ren1)
         iren = vtkRenderWindowInteractor()
         iren.SetRenderWindow(renWin)