apiserver/params: Use omitempty for SSH key structs
apiserver/params: Use omitempty for SSH key structs

Where appropriate

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