cmd/juju: fix test expecting trusty tools
cmd/juju: fix test expecting trusty tools

The tests were recently changed to use the
latest LTS release, however the fake tools
list wasn't updated to match. One of the
tests was failing on my Trusty machine; this
fixes it.

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