BUGFIX: Marking of ghost nodes on the boundary
BUGFIX: Marking of ghost nodes on the boundary

When creating ghost nodes on the boundary, i.e., the boundary of the
entire domain, mark them as vtkGhostArray::BOUNDARY.

Change-Id: I73eb727ca37dccd5e2229e30980aecf18bb6b645

gram526/VTK,SimVascular/VTK,cjh1/VTK,ashray/VTK-EVM,mspark93/VTK,candy7393/VTK,biddisco/VTK,johnkit/vtk-dev,demarle/VTK,biddisco/VTK,msmolens/VTK,aashish24/VTK-old,sumedhasingla/VTK,mspark93/VTK,sankhesh/VTK,mspark93/VTK,gram526/VTK,collects/VTK,keithroe/vtkoptix,hendradarwin/VTK,keithroe/vtkoptix,keithroe/vtkoptix,SimVascular/VTK,jmerkow/VTK,keithroe/vtkoptix,cjh1/VTK,candy7393/VTK,demarle/VTK,sumedhasingla/VTK,sumedhasingla/VTK,demarle/VTK,johnkit/vtk-dev,collects/VTK,biddisco/VTK,jmerkow/VTK,ashray/VTK-EVM,candy7393/VTK,johnkit/vtk-dev,cjh1/VTK,biddisco/VTK,cjh1/VTK,candy7393/VTK,aashish24/VTK-old,gram526/VTK,sankhesh/VTK,aashish24/VTK-old,sumedhasingla/VTK,mspark93/VTK,msmolens/VTK,jmerkow/VTK,candy7393/VTK,berendkleinhaneveld/VTK,sankhesh/VTK,berendkleinhaneveld/VTK,mspark93/VTK,gram526/VTK,msmolens/VTK,collects/VTK,hendradarwin/VTK,msmolens/VTK,keithroe/vtkoptix,msmolens/VTK,jmerkow/VTK,sankhesh/VTK,msmolens/VTK,demarle/VTK,sumedhasingla/VTK,collects/VTK,mspark93/VTK,keithroe/vtkoptix,sankhesh/VTK,johnkit/vtk-dev,gram526/VTK,jmerkow/VTK,ashray/VTK-EVM,demarle/VTK,collects/VTK,gram526/VTK,biddisco/VTK,candy7393/VTK,sankhesh/VTK,aashish24/VTK-old,aashish24/VTK-old,sankhesh/VTK,johnkit/vtk-dev,hendradarwin/VTK,ashray/VTK-EVM,sumedhasingla/VTK,hendradarwin/VTK,gram526/VTK,ashray/VTK-EVM,johnkit/vtk-dev,candy7393/VTK,cjh1/VTK,mspark93/VTK,berendkleinhaneveld/VTK,jmerkow/VTK,demarle/VTK,SimVascular/VTK,hendradarwin/VTK,SimVascular/VTK,SimVascular/VTK,msmolens/VTK,keithroe/vtkoptix,berendkleinhaneveld/VTK,demarle/VTK,biddisco/VTK,jmerkow/VTK,msmolens/VTK,aashish24/VTK-old,ashray/VTK-EVM,ashray/VTK-EVM,johnkit/vtk-dev,berendkleinhaneveld/VTK,ashray/VTK-EVM,hendradarwin/VTK,collects/VTK,cjh1/VTK,SimVascular/VTK,SimVascular/VTK,demarle/VTK,sumedhasingla/VTK,jmerkow/VTK,candy7393/VTK,biddisco/VTK,berendkleinhaneveld/VTK,sankhesh/VTK,gram526/VTK,hendradarwin/VTK,berendkleinhaneveld/VTK,sumedhasingla/VTK,mspark93/VTK,SimVascular/VTK,keithroe/vtkoptix