Comment 5 for bug 1626515

Linked branch wires up max_wait (as max-wait, for consistency) and it works for Juju 1. The Juju 2 code doesn't use juju-wait at all and will have to implement its own logic. For now, my branch raises NotImplementedError is raised when max-wait is supplied, although if folks are running the same specs with both versions of Juju, this may make max-wait difficult to use, so maybe we should to do something else instead.