worker/logsender: don't use DefaultDialOpts
worker/logsender: don't use DefaultDialOpts

In order to remain responsive, the logsender should just error out
quickly if it can't make an API connection but DefaultDialOpts entails
a 10 minute timeout. Using DialOpts allows the connection attempt to
timeout quickly. This is in line with what the machine agent API
worker does.

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