state: added remaining allwatcher multi-environment tests
state: added remaining allwatcher multi-environment tests

Multi-environment isolation is now tested for units, relations,
statues, constraints and settings. Machines, services and annotations
were already being tested.

Also restructed these tests to avoid repetition and enhance clarity.

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