Reorganize apt-get installs
Reorganize apt-get installs

Split out the installs by expected ppa source, so the ppa <-> package
links are easier to maintain over time.

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