Comment 2 for bug 1714926

We're trying to consolidate horizon and other services into a separate model and we need cross model relations to work.

Unfortunately, as Nobuto explains, AVAILABLE_REGIONS doesn't get populated.

We were able to kludge a fix by hard-coding the AVAILABLE_REGIONS in the local_settings.py template but this is a stop-gap at best.

Is the issue that cross-model relations are handled differently than regular relations, from the charm's perspective?