utils/ssh: fix flaky run tests
utils/ssh: fix flaky run tests

Timeout should be long if the operation
is not expected to timeout.

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