[r=jameinel] testing: pass --nounixsocket to mongod
[r=jameinel] testing: pass --nounixsocket to mongod

The tests are leaving Unix socket files
in $TMPDIR when mongod is killed. We
don't need Unix sockets for mongod in
our tests, so just disable them.

https://codereview.appspot.com/12828046/
dimitern/juju,Altoros/juju-cloudsigma,anastasiamac/juju,makyo/juju,reedobrien/juju,ericsnowcurrently/juju,makyo/juju,jrwren/juju,davecheney/juju,tsakas/juju,davecheney/juju,mjs/juju,waigani/juju,axw/juju,mhilton/juju,bogdanteleaga/juju,cloud-green/juju,tasdomas/juju,dooferlad/juju,mikemccracken/juju,waigani/juju,marcoceppi/juju,mhilton/juju-juju,bogdanteleaga/juju,thomnico/juju,tych0/juju,kat-co/juju,axw/juju,mikemccracken/juju,cmars/juju,perrito666/juju,kat-co/juju,mattyw/juju,mhilton/juju,howbazaar/juju,howbazaar/juju,wwitzel3/juju,frobware/juju,bogdanteleaga/juju,cherylj/juju,frankban/juju,macgreagoir/juju,bac/juju,bogdanteleaga/juju,makyo/juju,perrito666/juju,anastasiamac/juju,rogpeppe/juju,jrwren/juju,alesstimec/juju,fwereade/juju,marcmolla/juju,macgreagoir/juju,tasdomas/juju,davecheney/juju,Altoros/juju-vmware,cherylj/juju,voidspace/juju,tych0/juju,fwereade/juju,axw/juju,fwereade/juju,mhilton/juju,marcmolla/juju,wwitzel3/juju,Altoros/juju-cloudsigma,mattyw/juju,Altoros/juju-vmware,mhilton/juju-juju,fwereade/juju,wwitzel3/juju,tych0/juju,marcmolla/juju,AdamIsrael/juju,reedobrien/juju,kat-co/juju,thomnico/juju,perrito666/juju,thomnico/juju,dooferlad/juju,reedobrien/juju,dimitern/juju,dooferlad/juju,perrito666/juju,Altoros/juju-vmware,mattyw/juju,cmars/juju,bz2/juju,ericsnowcurrently/juju,cloud-green/juju,Altoros/juju-vmware,marcoceppi/juju,cherylj/juju,kat-co/juju,alesstimec/juju,perrito666/juju,bz2/juju,marcoceppi/juju,bac/juju,frankban/juju-tmp,ericsnowcurrently/juju,bac/juju,AdamIsrael/juju,mjs/juju,rogpeppe/juju,waigani/juju,AdamIsrael/juju,marcmolla/juju,tasdomas/juju,sinzui/juju,ericsnowcurrently/juju,frankban/juju,reedobrien/juju,frobware/juju,rogpeppe/juju,sinzui/juju,mattyw/juju,frobware/juju,mikemccracken/juju,mjs/juju,frankban/juju,AdamIsrael/juju,wwitzel3/juju,cmars/juju,macgreagoir/juju,macgreagoir/juju,sinzui/juju,alesstimec/juju,dimitern/juju,mjs/juju,howbazaar/juju,sinzui/juju,jrwren/juju,voidspace/juju,gabriel-samfira/juju,ericsnowcurrently/juju,mhilton/juju,mikemccracken/juju,bac/juju,alesstimec/juju,frankban/juju-tmp,voidspace/juju,mjs/juju,mikemccracken/juju,mjs/juju,tych0/juju,Altoros/juju-cloudsigma,tsakas/juju,cloud-green/juju,mhilton/juju-juju,bz2/juju,cmars/juju,howbazaar/juju,bac/juju,cherylj/juju,frankban/juju,thomnico/juju,gabriel-samfira/juju,howbazaar/juju,marcmolla/juju,dimitern/juju,dimitern/juju,davecheney/juju,anastasiamac/juju,tsakas/juju,tsakas/juju,waigani/juju,tasdomas/juju,macgreagoir/juju,gabriel-samfira/juju,frankban/juju-tmp,mjs/juju,axw/juju,frankban/juju,axw/juju,frankban/juju-tmp,marcoceppi/juju,reedobrien/juju,voidspace/juju,anastasiamac/juju,alesstimec/juju,dooferlad/juju,Altoros/juju-cloudsigma,bz2/juju,kat-co/juju,makyo/juju,bz2/juju,anastasiamac/juju,gabriel-samfira/juju,gabriel-samfira/juju,reedobrien/store,dooferlad/juju,cloud-green/juju,mhilton/juju-juju