Should workflow.yaml use the `configuration` or `credential` key?

[josephjclark]

At the moment a workflow.yaml defines a step like:

id: a
expression: step.js
configuration: <uuid>

But should configuration actually be credential?

• credential is more in line with app language so it makes sense for that to be a UUID
• configuration is part of a runtime workflow structure, an execution plan. The runtime doesn't know anything about credentials, per se
• I think it makes sense for credential to be an optional UUID, resolved by the CLI, and configuration to be a plain object. And you can have both