Non-deterministic map operator option in data loading

[MartinGleize]

What does this PR do? Please describe:

Add the "deterministic" boolean parameter to the map operator in data_pipeline. It follows similar semantics as the tensorflow equivalent: https://www.tensorflow.org/api_docs/python/tf/data/Dataset#map , i.e. it trades the matching of output and input order with some execution speed.

Does your PR introduce any breaking changes? If yes, please list them:
No

Check list:

• Was the content of this PR discussed and approved via a GitHub issue? (no need for typos or documentation improvements)
• Did you read the contributor guideline?
• Did you make sure that your PR does only one thing instead of bundling different changes together?
• Did you make sure to update the documentation with your changes? (if necessary)
• Did you write any new necessary tests?
• Did you verify new and existing tests pass locally with your changes?
• Did you update the CHANGELOG? (no need for typos, documentation, or minor internal changes)