Align metricsDoc.EnvUUID serialization.
Align metricsDoc.EnvUUID serialization.

Follow the multi-environment document convention of serializing EnvUUID
as "env-uuid".

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