[DPE-2406] Fix pod deletion #134
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Issue
When the PgBlouncer charm pod is deleted, the auth file is not re-rendered, causing connection issues.
Solution
Re-render the auth file in the
upgrade-charmhook, which is executed after a pod is rescheduled (like when we manually delete the pod).Also added a check in the
on-starthook, that is the hook that fires when the host machine is restarted (like when the Multipass VM is restarted).Fixes #133.