lxd: check lxd versions
lxd: check lxd versions

Some versions of LXD broke the API, and the current 2.0 API that juju is
complied with is not backwards compatible with these LXD versions. Let's
just refuse to bootstrap on any LXD that isn't 2.0.0 or greater.

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

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