Add output keys to datasets produced by RUN_MODEL and RUN_FLOW jobs

[martin-traverse]

Feature Request

For RUN_MODEL jobs the key should be the model output key while for RUN_FLOW jobs the key should be the name of the flow output node. These should be controlled attrrs (i.e. .named trac_*). We need to decide whether to use the same attr for model and flow outputs, or whether to use different ones.

Description of Problem:

Currently there is no standard controlled tag attr added to job outputs by TRAC. Attrs can be added by configuring a flow/job to add them, but we want a standard contrtolled tag that is always supplied by TRAC and cannot be editted by users, as part of the audit history of where a dataset came from.

Potential Solutions:

See above.

[mslapek]

@martin-traverse What do you understand as key in that context?

There is only objectId in RunModelJob.model...

[martin-traverse]

This is already done, trac_job_output is added to every output created by a job. For RunModelJob the output key is the model output key, for RunFlowJob the output key is the flow output node name.