added support for each test to specify a threshold
added support for each test to specify a threshold

mspark93/VTK,hendradarwin/VTK,naucoin/VTKSlicerWidgets,aashish24/VTK-old,arnaudgelas/VTK,aashish24/VTK-old,SimVascular/VTK,gram526/VTK,cjh1/VTK,spthaolt/VTK,johnkit/vtk-dev,jeffbaumes/jeffbaumes-vtk,jmerkow/VTK,sankhesh/VTK,johnkit/vtk-dev,daviddoria/PointGraphsPhase1,ashray/VTK-EVM,jmerkow/VTK,Wuteyan/VTK,ashray/VTK-EVM,demarle/VTK,SimVascular/VTK,gram526/VTK,SimVascular/VTK,sumedhasingla/VTK,cjh1/VTK,sankhesh/VTK,collects/VTK,jmerkow/VTK,candy7393/VTK,aashish24/VTK-old,biddisco/VTK,berendkleinhaneveld/VTK,hendradarwin/VTK,msmolens/VTK,sgh/vtk,demarle/VTK,cjh1/VTK,spthaolt/VTK,spthaolt/VTK,spthaolt/VTK,ashray/VTK-EVM,hendradarwin/VTK,SimVascular/VTK,msmolens/VTK,keithroe/vtkoptix,msmolens/VTK,candy7393/VTK,Wuteyan/VTK,naucoin/VTKSlicerWidgets,Wuteyan/VTK,berendkleinhaneveld/VTK,spthaolt/VTK,hendradarwin/VTK,sankhesh/VTK,arnaudgelas/VTK,candy7393/VTK,mspark93/VTK,msmolens/VTK,biddisco/VTK,hendradarwin/VTK,johnkit/vtk-dev,collects/VTK,daviddoria/PointGraphsPhase1,sankhesh/VTK,sumedhasingla/VTK,daviddoria/PointGraphsPhase1,berendkleinhaneveld/VTK,Wuteyan/VTK,sgh/vtk,hendradarwin/VTK,collects/VTK,ashray/VTK-EVM,keithroe/vtkoptix,demarle/VTK,candy7393/VTK,cjh1/VTK,jeffbaumes/jeffbaumes-vtk,spthaolt/VTK,biddisco/VTK,aashish24/VTK-old,arnaudgelas/VTK,hendradarwin/VTK,SimVascular/VTK,sgh/vtk,gram526/VTK,berendkleinhaneveld/VTK,sumedhasingla/VTK,berendkleinhaneveld/VTK,arnaudgelas/VTK,Wuteyan/VTK,mspark93/VTK,keithroe/vtkoptix,daviddoria/PointGraphsPhase1,ashray/VTK-EVM,jeffbaumes/jeffbaumes-vtk,jmerkow/VTK,jeffbaumes/jeffbaumes-vtk,jmerkow/VTK,ashray/VTK-EVM,sumedhasingla/VTK,sumedhasingla/VTK,demarle/VTK,mspark93/VTK,msmolens/VTK,mspark93/VTK,biddisco/VTK,berendkleinhaneveld/VTK,Wuteyan/VTK,keithroe/vtkoptix,sankhesh/VTK,jeffbaumes/jeffbaumes-vtk,naucoin/VTKSlicerWidgets,SimVascular/VTK,candy7393/VTK,mspark93/VTK,naucoin/VTKSlicerWidgets,msmolens/VTK,gram526/VTK,arnaudgelas/VTK,sgh/vtk,keithroe/vtkoptix,msmolens/VTK,collects/VTK,keithroe/vtkoptix,aashish24/VTK-old,jmerkow/VTK,biddisco/VTK,daviddoria/PointGraphsPhase1,naucoin/VTKSlicerWidgets,gram526/VTK,cjh1/VTK,mspark93/VTK,johnkit/vtk-dev,spthaolt/VTK,ashray/VTK-EVM,SimVascular/VTK,Wuteyan/VTK,biddisco/VTK,jmerkow/VTK,collects/VTK,gram526/VTK,jmerkow/VTK,sumedhasingla/VTK,johnkit/vtk-dev,collects/VTK,johnkit/vtk-dev,cjh1/VTK,sgh/vtk,gram526/VTK,daviddoria/PointGraphsPhase1,mspark93/VTK,keithroe/vtkoptix,johnkit/vtk-dev,sumedhasingla/VTK,msmolens/VTK,SimVascular/VTK,sankhesh/VTK,sankhesh/VTK,demarle/VTK,sumedhasingla/VTK,candy7393/VTK,sankhesh/VTK,berendkleinhaneveld/VTK,arnaudgelas/VTK,gram526/VTK,ashray/VTK-EVM,jeffbaumes/jeffbaumes-vtk,demarle/VTK,biddisco/VTK,keithroe/vtkoptix,sgh/vtk,candy7393/VTK,aashish24/VTK-old,demarle/VTK,candy7393/VTK,naucoin/VTKSlicerWidgets,demarle/VTK