ENH: default to collateTimes on for ensight output

- the uncollated version becomes quite difficult to process.

  Caveat: cannot use "collateTimes true" for non-static geometries

tutorials/incompressible/icoFoam/cavity/cavity/system/controlDict

@@ -45,5 +45,39 @@ timePrecision   6;
 
 runTimeModifiable true;
 
+functions
+{
+  cuttingPlane
+  {
+      type            surfaces;
+      functionObjectLibs ("libsampling.so");
+      outputControl   timeStep;       //outputTime;
+      outputInterval  4;
+
+      surfaceFormat   ensight;
+      formatOptions
+      {
+//          ensight { format binary; collateTimes true;}
+      }
+      fields          (p U);
+
+      interpolationScheme cellPoint;
+
+      surfaces
+      (
+          zNormal_0.0
+          {
+              type            cuttingPlane;
+              planeType       pointAndNormal;
+              pointAndNormalDict
+              {
+                  basePoint       (0 0 0.005);
+                  normalVector    (0 0 1);
+              }
+              interpolate     true;
+          }
+      );
+  }
+}
 
 // ************************************************************************* //