switch off indexfilter tests for now
switch off indexfilter tests for now

DougFirErickson/PDAL,mpgerlek/PDAL-old,jwomeara/PDAL,verma/PDAL,mpgerlek/PDAL-old,radiantbluetechnologies/PDAL,DougFirErickson/PDAL,Sciumo/PDAL,boundlessgeo/PDAL,boundlessgeo/PDAL,jwomeara/PDAL,lucadelu/PDAL,verma/PDAL,radiantbluetechnologies/PDAL,mtCarto/PDAL,mpgerlek/PDAL-old,radiantbluetechnologies/PDAL,DougFirErickson/PDAL,verma/PDAL,Sciumo/PDAL,boundlessgeo/PDAL,mtCarto/PDAL,DougFirErickson/PDAL,Sciumo/PDAL,verma/PDAL,jwomeara/PDAL,verma/PDAL,verma/PDAL,lucadelu/PDAL,jwomeara/PDAL,mtCarto/PDAL,Sciumo/PDAL,verma/PDAL,lucadelu/PDAL,mpgerlek/PDAL-old,radiantbluetechnologies/PDAL,mtCarto/PDAL,boundlessgeo/PDAL,lucadelu/PDAL