Update utils dep.
Drop Metadata.Copy().
Merge pull request #1156 from ericsnowcurrently/backups-drop-meta-Copy

Drop Copy() from backups.Metadata

http://reviews.vapour.ws/r/447/

(Review request: https://reviews.vapour.ws/r/467/)
WIP action supercommand: registered with main
WIP action supercommand: removed wrong notes for defined
WIP CLI action supercommand: added common and common testing
WIP supercommand: add tabbedString method for outputs
WIP juju action do: needs testing, builds and passes