Add archusers role and lots of pubkeys

group_vars/all/archusers.yml

group_vars/all/python2.yml

group_vars/all/root_pubkeys.yml

playbooks/orion.yml

pubkeys/aaron.pub

pubkeys/aginiewicz.pub

pubkeys/allan.pub

pubkeys/alucryd.pub

pubkeys/ambrevar.pub

pubkeys/anatolik.pub

pubkeys/andrea.pub

pubkeys/andrew.pub

pubkeys/andyrtr.pub

pubkeys/angvp.pub

pubkeys/anthraxx.pub

pubkeys/arcanis.pub

pubkeys/arodseth.pub

pubkeys/arojas.pub

pubkeys/bgyorgy.pub

pubkeys/bisson.pub