Imports github.com/juju/juju/utils/ssh github.com/juju/utils/proxy github.com/juju/schema github.com/juju/errors github.com/juju/juju/cert github.com/juju/juju/juju/osenv github.com/juju/juju/version github.com/juju/loggo github.com/juju/utils gopkg.in/juju/charm.v4 Standard library imports bytes crypto/tls fmt io/ioutil os os/exec path/filepath regexp strings time