Generated client does not accept content types specified in schema

Problem statement

If some content type like "image/png" or "/" is specified in "produces" part schema, generated client does not accept those content types and errors out with 'no consumer: "image/png"'.

Specifically, we use a schema like the one below and respond to user requests with binary data and set content-type header manually based on mime-type of the data. It works fine if you access it from curl or web browser but errors in go-swagger generated client.

Swagger specification

swagger: "2.0"
info:
  title: Test
  version: 0.0.1
schemes:
- "http"
paths:
  /test:
    get:
      produces:
        - "application/octet-stream"
        - "*/*"
      responses:
        200:
          description: 200 response
          headers:
            Content-Type:
              type: string
          schema:
            type: string
            format: byte