[hotfix] [Dask] Add configuration to access multithreaded queue
This adds an additional queue configuration that asks for multithreaded jobs, thus doubling the virtual memory limit to 16GB. With this fix I can run heavy Tensorflow baselines without OOM crash.
Long term it would be better to:
- Expose the exact thread multiplier (now 2 by default)
- Use the resource tagging of transformers to have the queue dynamically selected based on the transformer