Update POST /workspace to accept an auth_config

[TessFerrandez]

As a TRE admin
I want to supply the information about the AAD App when creating a workspace
so that we can validate against this data if a user should have access to see the resource

This will be used to validate the access for a user to the workspace

NOTE: data here is different for each provider so it should be given as a dict

Acceptance criteria:

• The workspace post should accept an auth_config as part of the request with the following format
  "auth_config": {"provider": "AAD", "data": {"app_id": "blabla"}} -- NOTE: the data portion is different for each provider so make this a dict
• Validates that auth configuration is provided.
• For AAD validates that the APP has the roles "owner" and "researcher"
• Stores the APP Role IDs for the owner and researcher roles as part of the workspace request
• Stores the SP object ID as part of the resource request

[TessFerrandez]

For more details - talk to @askew