provider/local: qualify pkill jujud with home dir
provider/local: qualify pkill jujud with home dir

When local was changed to use common code for
bootstrap and destroy, destroy regressed and
would destroy any jujud running on the machine.
This CL fixes it by only killing the jujud that
is located in the environment's data-dir.

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