Previously when saving settings the datasource would be partially rebuild but maintain its connection cache, so if auth-related settings changed the change would not be applied. Now the datasource will be rebuilt entirely.
Regarding redshift, yep, same story there. I'm going to duplicate this there for now, and make a ticket to refactor it into grafana-aws-sdk later - the interfaces are a bit too tangled up to make it a quick fix.
Previously when saving settings the datasource would be partially rebuild but maintain its connection cache, so if auth-related settings changed the change would not be applied. Now the datasource will be rebuilt entirely.
Fixes #264.