Marshall provider config back to JSON from parsed structures to strip extra keys #3544
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Summary
Right now, we parse the user-provided provider configuration, but if it passes validation, we save the user-provided config verbatim. This means that if there are any extra keys, we save them as well because Go ignores extra attributes when unmarshalling JSON.
We need to fix this or else we risk our users flood our database with large configs.
Credit to @blkt for bringing this up.
Fixes #3543
Change Type
Testing
manual + make test
Review Checklist: