bootstrap: remove local packages var
bootstrap: remove local packages var

packages var is useless as self.distro_packages
Stringify the cmd log

nirbheek/cerbero,GStreamer/cerbero,nirbheek/cerbero,nirbheek/cerbero,nirbheek/cerbero,GStreamer/cerbero,GStreamer/cerbero,GStreamer/cerbero,GStreamer/cerbero