Mc 560 data requests get filter multiple statuses

[maxachis]

Fixes

• Update /data-requests GET to filter for multiple statuses data-sources-app#560

Description

• Update request_status query parameter in /data-requests GET to requests_statuses, which can accept and filter on multiple request statuses at a time.
• Updated tests accordingly

Testing

• Run tests in tests directory, and confirm all function as expected
• Inspect API and confirm presence of expected changes.

Performance

• Impact marginal

Docs

• API documentation updated.

Breaking Changes

• request_status query parameter in /data-requests GET no longer functions: request_statuses must be used instead.