Comment 5 for bug 1789545

Here's some truncated output using the above script. I upgraded a non-controller model from 2.9.20.3 to 2.9.20.4. Note the "agent-version" change.

-- change --
<class 'juju.client.overrides.Delta'>({'deltas': ['model', 'change', {'model-uuid': '53815d9f-3b59-4483-85b8-d9bded547206', 'name': 'controller', 'life': 'alive', 'owner': 'admin', 'controller-uuid': 'dc13fa65-e759-4be8-8011-b7aa0ef10930', 'is-controller': True, 'config': {'agent-metadata-url': '', 'agent-version': '2.9.20.3',
-- change --
<class 'juju.client.overrides.Delta'>({'deltas': ['model', 'change', {'model-uuid': '53815d9f-3b59-4483-85b8-d9bded547206', 'name': 'controller', 'life': 'alive', 'owner': 'admin', 'controller-uuid': 'dc13fa65-e759-4be8-8011-b7aa0ef10930', 'is-controller': True, 'config': {'agent-metadata-url': '', 'agent-version': '2.9.20.4',