cmd/juju/commands: skip package under -race
cmd/juju/commands: skip package under -race

Also use a different method to skip the package test on 386 machines.

bz2/juju,fwereade/juju,dimitern/juju,reedobrien/juju,mikemccracken/juju,gabriel-samfira/juju,bac/juju,gabriel-samfira/juju,ericsnowcurrently/juju,frankban/juju,reedobrien/juju,mjs/juju,howbazaar/juju,ericsnowcurrently/juju,frankban/juju,wwitzel3/juju,makyo/juju,dooferlad/juju,marcmolla/juju,marcmolla/juju,frankban/juju,bz2/juju,mikemccracken/juju,dooferlad/juju,bac/juju,makyo/juju,reedobrien/juju,macgreagoir/juju,kat-co/juju,alesstimec/juju,dimitern/juju,bz2/juju,mjs/juju,axw/juju,AdamIsrael/juju,ericsnowcurrently/juju,davecheney/juju,fwereade/juju,davecheney/juju,perrito666/juju,howbazaar/juju,perrito666/juju,marcmolla/juju,frankban/juju,anastasiamac/juju,wwitzel3/juju,reedobrien/juju,wwitzel3/juju,dimitern/juju,davecheney/juju,dimitern/juju,wwitzel3/juju,bac/juju,anastasiamac/juju,bogdanteleaga/juju,kat-co/juju,dimitern/juju,bogdanteleaga/juju,axw/juju,voidspace/juju,anastasiamac/juju,dooferlad/juju,waigani/juju,frankban/juju,dooferlad/juju,bz2/juju,axw/juju,macgreagoir/juju,marcmolla/juju,bz2/juju,bogdanteleaga/juju,macgreagoir/juju,mjs/juju,axw/juju,davecheney/juju,gabriel-samfira/juju,mikemccracken/juju,bac/juju,axw/juju,macgreagoir/juju,dooferlad/juju,voidspace/juju,mjs/juju,bogdanteleaga/juju,perrito666/juju,AdamIsrael/juju,alesstimec/juju,kat-co/juju,perrito666/juju,waigani/juju,kat-co/juju,gabriel-samfira/juju,mjs/juju,anastasiamac/juju,mikemccracken/juju,mikemccracken/juju,makyo/juju,howbazaar/juju,kat-co/juju,mjs/juju,alesstimec/juju,fwereade/juju,reedobrien/juju,waigani/juju,anastasiamac/juju,makyo/juju,macgreagoir/juju,alesstimec/juju,AdamIsrael/juju,ericsnowcurrently/juju,perrito666/juju,howbazaar/juju,mjs/juju,howbazaar/juju,ericsnowcurrently/juju,alesstimec/juju,voidspace/juju,fwereade/juju,marcmolla/juju,gabriel-samfira/juju,waigani/juju,AdamIsrael/juju,bac/juju,voidspace/juju