add parent/child fetching schema test
add parent/child fetching schema test

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