[New Feature]: Using shared disk space for inter-task communication

[LucaCinquini]

Explore possible options: EBS, EFS, AWS Mountpoints

Acceptance Criteria:
o Execution of a DAG workflow with multiple CWL tasks, where data is passed through a shared disk space

[drewm-swe]

@LucaCinquini do you think this can be marked as done, here is my PR in unity-sps:
#16

[LucaCinquini]

We verified that this feature works, using multiple DAGs. The ticket can be closed, although the PR cannot be merged yet because the DIND Docker container picked up a wrong feature while debugging, this will be fixed soon.