* debian/patches: - 01-fix-database-settings.patch: Update PSERV_URL port. - 02-pserv-config.patch: Update, and set 'maas' as username. - 03-longpoll-config.patch: Update. * debian/maas.install: Install preseeds and snippets. * debian/maas.postinst: - Set password for 'maas' cobbler username (in pserv and cobbler). - Set DEFAULT_MAAS_URL to IP of interface with default gateway.