lxd: capture any logs from the lxd client
lxd: capture any logs from the lxd client

The go LXD API exposes a logger in shared/ that the client uses for most of
its logging, so let's hook that and send it to the juju lxdclient logger.

Signed-off-by: Tycho Andersen <10c18fcb898ee6b17d6575d444b125d10b3f4d6a@canonical.com>

dooferlad/juju,reedobrien/juju,mikemccracken/juju,frankban/juju,dimitern/juju,bac/juju,dimitern/juju,mjs/juju,bogdanteleaga/juju,mikemccracken/juju,waigani/juju,dooferlad/juju,waigani/juju,bz2/juju,perrito666/juju,axw/juju,marcmolla/juju,gabriel-samfira/juju,mjs/juju,ericsnowcurrently/juju,mjs/juju,macgreagoir/juju,gabriel-samfira/juju,AdamIsrael/juju,gabriel-samfira/juju,makyo/juju,macgreagoir/juju,marcmolla/juju,alesstimec/juju,mjs/juju,AdamIsrael/juju,perrito666/juju,makyo/juju,mjs/juju,alesstimec/juju,kat-co/juju,anastasiamac/juju,ericsnowcurrently/juju,AdamIsrael/juju,howbazaar/juju,bz2/juju,ericsnowcurrently/juju,anastasiamac/juju,bogdanteleaga/juju,anastasiamac/juju,axw/juju,reedobrien/juju,perrito666/juju,bac/juju,axw/juju,dimitern/juju,alesstimec/juju,perrito666/juju,kat-co/juju,gabriel-samfira/juju,dooferlad/juju,howbazaar/juju,makyo/juju,waigani/juju,marcmolla/juju,marcmolla/juju,makyo/juju,dooferlad/juju,bz2/juju,mikemccracken/juju,AdamIsrael/juju,ericsnowcurrently/juju,howbazaar/juju,bz2/juju,mikemccracken/juju,ericsnowcurrently/juju,waigani/juju,bz2/juju,bogdanteleaga/juju,anastasiamac/juju,bogdanteleaga/juju,kat-co/juju,anastasiamac/juju,macgreagoir/juju,mjs/juju,dooferlad/juju,reedobrien/juju,macgreagoir/juju,alesstimec/juju,reedobrien/juju,gabriel-samfira/juju,frankban/juju,kat-co/juju,howbazaar/juju,frankban/juju,mjs/juju,bac/juju,alesstimec/juju,bac/juju,marcmolla/juju,axw/juju,dimitern/juju,frankban/juju,reedobrien/juju,axw/juju,howbazaar/juju,mikemccracken/juju,bac/juju,macgreagoir/juju,perrito666/juju,frankban/juju,kat-co/juju,dimitern/juju