Add generate_computed_file Command

[avrohomgottlieb]

Context

We want Batch jobs to be able to handle one computed_file at a time, consisting of a project or sample and a download_config.

Problem or idea

This will entail adding a generate_computed_file method to the loader module, and adding a new generate_computed_file management command. This ticket should handle tests for the new loader::generate_computed_file method as well.

As well, a dispatch_to_batch command should be added, which either takes a project id and iterates over all project (and sample) + download config combinations and submits them to Batch.

Tests should also be created, which accomplish the following:

• generate_computed_file command:
  • validate that the project_id / sample_id exists
  • validate that the download config name exists
• loader::generate_computed_file:
  • validate if a download config applies to the project/sample

Solution or next step

...

[avrohomgottlieb]

Addressed in PR #936