Factor out a newBackupID function.
Factor out a newBackupID function.

fwereade/juju,makyo/juju,wwitzel3/juju,thomnico/juju,Altoros/juju-vmware,mikemccracken/juju,mhilton/juju-juju,mhilton/juju,gabriel-samfira/juju,Altoros/juju-cloudsigma,wwitzel3/juju,Altoros/juju-cloudsigma,axw/juju,mjs/juju,wwitzel3/juju,marcmolla/juju,AdamIsrael/juju,fwereade/juju,bz2/juju,cloud-green/juju,bz2/juju,dimitern/juju,jrwren/juju,cloud-green/juju,AdamIsrael/juju,waigani/juju,axw/juju,reedobrien/juju,marcmolla/juju,axw/juju,jrwren/juju,alesstimec/juju,bac/juju,perrito666/juju,ericsnowcurrently/juju,davecheney/juju,waigani/juju,mjs/juju,frankban/juju,cherylj/juju,marcmolla/juju,gabriel-samfira/juju,bogdanteleaga/juju,mhilton/juju-juju,perrito666/juju,voidspace/juju,kat-co/juju,howbazaar/juju,mikemccracken/juju,anastasiamac/juju,Altoros/juju-cloudsigma,bogdanteleaga/juju,mhilton/juju-juju,bac/juju,macgreagoir/juju,ericsnowcurrently/juju,mjs/juju,dimitern/juju,mhilton/juju,makyo/juju,thomnico/juju,macgreagoir/juju,marcmolla/juju,Altoros/juju-vmware,howbazaar/juju,marcoceppi/juju,sinzui/juju,sinzui/juju,alesstimec/juju,marcoceppi/juju,tych0/juju,ericsnowcurrently/juju,anastasiamac/juju,tsakas/juju,reedobrien/juju,dooferlad/juju,Altoros/juju-vmware,voidspace/juju,marcoceppi/juju,alesstimec/juju,frankban/juju,tych0/juju,anastasiamac/juju,tych0/juju,cmars/juju,macgreagoir/juju,bac/juju,gabriel-samfira/juju,alesstimec/juju,cherylj/juju,Altoros/juju-vmware,anastasiamac/juju,AdamIsrael/juju,howbazaar/juju,tasdomas/juju,frankban/juju,axw/juju,frankban/juju,dooferlad/juju,anastasiamac/juju,bz2/juju,reedobrien/juju,marcmolla/juju,mikemccracken/juju,perrito666/juju,sinzui/juju,makyo/juju,AdamIsrael/juju,bogdanteleaga/juju,fwereade/juju,frankban/juju-tmp,davecheney/juju,tsakas/juju,dooferlad/juju,gabriel-samfira/juju,thomnico/juju,bz2/juju,reedobrien/juju,cloud-green/juju,bogdanteleaga/juju,dooferlad/juju,jrwren/juju,mikemccracken/juju,bac/juju,mjs/juju,howbazaar/juju,mhilton/juju-juju,dimitern/juju,dooferlad/juju,bac/juju,mhilton/juju,ericsnowcurrently/juju,perrito666/juju,ericsnowcurrently/juju,makyo/juju,mjs/juju,tsakas/juju,frankban/juju-tmp,dimitern/juju,frankban/juju-tmp,tasdomas/juju,bz2/juju,sinzui/juju,mjs/juju,davecheney/juju,kat-co/juju,mjs/juju,wwitzel3/juju,cloud-green/juju,mikemccracken/juju,tasdomas/juju,macgreagoir/juju,alesstimec/juju,macgreagoir/juju,voidspace/juju,frankban/juju-tmp,reedobrien/juju,cmars/juju,cmars/juju,frankban/juju,mhilton/juju,voidspace/juju,fwereade/juju,tsakas/juju,kat-co/juju,kat-co/juju,tych0/juju,davecheney/juju,waigani/juju,waigani/juju,cherylj/juju,howbazaar/juju,gabriel-samfira/juju,thomnico/juju,kat-co/juju,axw/juju,marcoceppi/juju,tasdomas/juju,cherylj/juju,perrito666/juju,dimitern/juju,Altoros/juju-cloudsigma,cmars/juju