Fix waiting for idle when app has no units

canonical / charmed-openstack-upgrader

Automatic upgrade tool for Charmed Openstack

Apache License 2.0

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Fix waiting for idle when app has no units #564

Closed samuelallan72 closed 1 month ago

samuelallan72 commented 1 month ago

Note: encountering a unit with no units is rare, and is probably an issue with the deployment if so. But it can happen, and we don't want to block COU on it if it does.

Fixes: #559 Fixes: #549