fix: non-leaders can only view app secrets #1076
Merged
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A charm that owns a unit secret always has manage permissions, regardless of which unit is executing the charm. However, an app secret has manage permissions if the charm is executing on the leader, and view permissions otherwise (the matrix in this WIP documentation has been verified by @wallyworld).
This PR adjusts the Harness permission check (used by get-info, set, grant, revoke, remove, etc) so that if the secret is an app secret, then the leader flag must be set for access to be allowed.
Fixes #1071