[API] Support for non-json content types

[brandtkeller]

Is your feature request related to a problem? Please describe.

Adding support for the API Domain to handle non-json content-types

Describe the solution you'd like

• Given a validation with the API domain
• When a validate is performed and the response returns content-type that is not json
• Then no error occurs and the data is made available as a string

Expected Deliverable

• Modification to the API domain to support the conditional json unmarshall process.