Update vagrant config.
Update vagrant config.

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