Add test for non-standard dimension names.
Add test for non-standard dimension names.

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