Use DAC and Policy from REMS

[csc-felipe]

The first ticket on this was CSCfi/metadata-submitter#291, which got implemented a bit differently in CSCfi/metadata-submitter#498.

Proposed solution

Get data from the API /v1/rems, and let user select DAC and policy.

DoD (Definition of Done)

Submissions can use DAC (workflow) and Policy (license) info from REMS.

DAC goes to a new endpoint: v1/submissions/{submission_id}/dac.

• Example request body: https://github.com/CSCfi/metadata-submitter/blob/4430eb27ea345dfd1eeae92aa6aef354ee5724a9/tests/test_files/dac/dac_rems.json
• Example publication flow: https://github.com/CSCfi/metadata-submitter/blob/4430eb27ea345dfd1eeae92aa6aef354ee5724a9/tests/http/publication_rems.http

Testing