[Bug] Creating Cases via API ignores the owner field

[drb0rn4gr8ness]

Creating Cases via API ignores the owner field.

Request Type

Bug

Work Environment

Question	Answer
TheHive	4.0.0-1,
API (using Postman & python scripts)

Problem Description

When I submit to create a case via API. The case is created but the owner is always assigned to the API Key that I'm using, even if I submit a user. I have been submitting the user login/email. This field is being ignored and automatically assigned to the user of the API Key.

Steps to Reproduce

1. Create an Organization/User
2. Do an API Post request to /api/case and include the owner field with user login different from the API User.
3. The owner field will be the API User