Juju 2.x support does not transition status correctly.

[Eric Snow]

In 2.0.0/fake-juju.go, there is code (toward the bottom) that transitions the agent status for machines and units, as well as workload status for units. It does this in response to deltas coming from a watcher. The code makes calls to unit.SetStatus() and unit.SetAgentStatus(). The effective state transitions, presumably simulating what happens in the respective agents, are not working.

A number of things have changed in Juju 2.x (from 1.x). In this case, either fake-juju isn't making the correct transitions or Juju is reporting deltas in a different way that we're expecting.

[Eric Snow (ericsnowcurrently)]

I'm attaching logs the demonstrate the state transitions.