Imports gopkg.in/errgo.v1 gopkg.in/juju/charmrepo.v3/csclient/params gopkg.in/macaroon-bakery.v2-unstable/httpbakery gopkg.in/juju/charm.v6 gopkg.in/httprequest.v1 gopkg.in/macaroon.v2-unstable Standard library imports bytes crypto/sha512 encoding/base64 encoding/json fmt io io/ioutil net/http net/url os reflect strconv strings time unicode