Merged back from lp:~fwereade/juju/really-isolate-formula-revisions
MetaData no longer has .revision; just .obsolete_revision. Charms have .get_revision() to compensate, which uses metadata.obsolete_revision only when a real revision file is not present.
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Merged back from lp:~fwereade/juju/really-isolate-formula-revisions
MetaData no longer has .revision; just .obsolete_revision. Charms have .get_revision() to compensate, which uses metadata. obsolete_ revision only when a real revision file is not present.