Changed the default CDash URL for VTK
Changed the default CDash URL for VTK

The CDash instance was moved to open.cdash.org some time ago, update
out configuration to reflect its current location.

Change-Id: Ic1a897339571bafebbabbecbeb1e73814d1acf6e

berendkleinhaneveld/VTK,ashray/VTK-EVM,gram526/VTK,demarle/VTK,candy7393/VTK,gram526/VTK,sumedhasingla/VTK,sumedhasingla/VTK,msmolens/VTK,jmerkow/VTK,candy7393/VTK,hendradarwin/VTK,demarle/VTK,mspark93/VTK,SimVascular/VTK,sumedhasingla/VTK,msmolens/VTK,hendradarwin/VTK,demarle/VTK,mspark93/VTK,sankhesh/VTK,keithroe/vtkoptix,msmolens/VTK,berendkleinhaneveld/VTK,candy7393/VTK,candy7393/VTK,SimVascular/VTK,sumedhasingla/VTK,sumedhasingla/VTK,keithroe/vtkoptix,keithroe/vtkoptix,gram526/VTK,jmerkow/VTK,ashray/VTK-EVM,gram526/VTK,jmerkow/VTK,sumedhasingla/VTK,sankhesh/VTK,ashray/VTK-EVM,mspark93/VTK,johnkit/vtk-dev,msmolens/VTK,msmolens/VTK,ashray/VTK-EVM,mspark93/VTK,hendradarwin/VTK,keithroe/vtkoptix,SimVascular/VTK,sankhesh/VTK,ashray/VTK-EVM,hendradarwin/VTK,jmerkow/VTK,mspark93/VTK,gram526/VTK,hendradarwin/VTK,SimVascular/VTK,demarle/VTK,sankhesh/VTK,hendradarwin/VTK,gram526/VTK,hendradarwin/VTK,sumedhasingla/VTK,jmerkow/VTK,jmerkow/VTK,johnkit/vtk-dev,johnkit/vtk-dev,candy7393/VTK,demarle/VTK,candy7393/VTK,johnkit/vtk-dev,jmerkow/VTK,msmolens/VTK,jmerkow/VTK,SimVascular/VTK,mspark93/VTK,SimVascular/VTK,demarle/VTK,msmolens/VTK,johnkit/vtk-dev,gram526/VTK,berendkleinhaneveld/VTK,johnkit/vtk-dev,SimVascular/VTK,SimVascular/VTK,candy7393/VTK,ashray/VTK-EVM,candy7393/VTK,keithroe/vtkoptix,demarle/VTK,sankhesh/VTK,msmolens/VTK,sumedhasingla/VTK,ashray/VTK-EVM,berendkleinhaneveld/VTK,berendkleinhaneveld/VTK,berendkleinhaneveld/VTK,sankhesh/VTK,sankhesh/VTK,keithroe/vtkoptix,keithroe/vtkoptix,mspark93/VTK,johnkit/vtk-dev,ashray/VTK-EVM,gram526/VTK,sankhesh/VTK,keithroe/vtkoptix,berendkleinhaneveld/VTK,demarle/VTK,mspark93/VTK