Add Ownership to Inputs and Outputs

[reskin89]

Summary

Some containers set a specific user for operations, this can cause an issue when attempting to use a container such as this, and then creating an output for it to put data in for a new task.

The issue here is that output directories are created with root:root ownership.

The suggestion here is to add owner and group optional attributes to an output directive such that:

outputs:
  - name: data
     owner: ubuntu
     group: wheel

This would allow a container that's bound to the ubuntu user to copy data into this output folder.

[drahnr]

Initial implementation attempt that would address it, based on the specified container user and group ids - #8807

There is still a bit of work to be done, it's not entirely clear how to thread the information through to the right place.

[drahnr]

Related: #403