In support of Endpoint Security, add the following additional attributes to datasources:

• updated_on : Date (ISO). Should be set every time the SO is updated
• updated_by : User. Should be set every time the SO is updated
• created_on : Date (ISO). Should be set once only during create
• created_by : User. Should be set once only during create

REST Impact

1. New attributes should be returned with every response that includes the Datasource
2. None of these new attributes should be accepted via the REST API (POST, PUT, etc.)
3. ❓ These should NOT be included in the JSON/YAML that is sent to the Agent (cc/ @nchaulet)

UI Impact

4. ❓ Should these be shown in the UI? (either on the Agent Config > Datasources list/table? or the Edit Datasource View?) (/cc @hbharding)