Referenced parameters are converted incorrectly

[hkosova]

Spec: https://gist.githubusercontent.com/hkosova/49dc5ed081cf553e01a1182e11b2e4ca/raw/5ea6988984bd8a0c0b3a506ac13b9dac396a74bc/param-ref.yaml

swagger: '2.0'
info:
  version: '1.0'
  title: Parameter references

paths:
  /report/{userId}:
    get:
      parameters:
        - $ref: '#/parameters/userIdParam'
        - $ref: '#/parameters/dateRangeParam'
      responses:
        200:
          description: OK
  /formPost:
    post:
      consumes:
        - application/x-www-form-urlencoded
      parameters:
        - $ref: '#/parameters/formEmail'
        - $ref: '#/parameters/formPassword'
      responses:
        200:
          description: OK
  /bodyPost:
    post:
      consumes:
        - application/json
      parameters:
        - $ref: '#/parameters/bodyParam'
      responses:
        200:
          description: OK

parameters:
  dateRangeParam:
    in: query
    name: dateRange
    type: string
    enum:
      - Today
      - Yesterday
      - LastWeek
    default: Today
  userIdParam:
    in: path
    name: userId
    type: integer
    required: true

  formEmail:
    in: formData
    name: email
    type: string
    format: email
    required: true
  formPassword:
    in: formData
    name: password
    type: string
    format: password
    required: true
  
  bodyParam:
    in: body
    name: body
    required: true
    schema:
      type: object
      properties:
        status:
          type: string
      required:
        - status

Problems:

1. Parameter $refs are converted to:

      parameters:
        - schema:
            $ref: '#/parameters/userIdParam'
        - schema:
            $ref: '#/parameters/dateRangeParam'

Should be:

      parameters:
        - $ref: '#/components/schemas/userIdParam'
        - $ref: '#/components/schemas/dateRangeParam'

2. Form and body parameters are converted in the same way as query/path parameters, but should be converted to requestBody instead.

[webron]

Fixed:

• Parameters reference components now.
• Top level body and formData parameters are converted to request bodies.

Not fixed:

• Path level formData and body parameters are not converted.
• References to top-level body/formData parameters reference #/components/parameters instead of #/components/requestBodies.