Support a charm resource to override the installed snap #149
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Overview
Create support to override the snap, while warning users they are using the charm in an override mode
Rationale
In order to test that new builds of the k8s snap will operate on the current stable k8s charm, we should be able to verify the snap before releasing it. To do so, we need a way to insert the snap into the charmed environment. This provides the ability to do so.