provider/ec2: add suffixes to size constants/vars
provider/ec2: add suffixes to size constants/vars

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