title: How to use bearer authentication in openapi-codegen generated python code
body: <p>I am using the OpenApi 3.0 specification to document my API. It is basically a REST API which requires a valid Bearer token for each request except for the login request. The OpenAPI spec looks like this:</p>
  
  <pre><code>---
  openapi: 3.0.0
  info:
    title: MyTitle
    contact:
      email: mymail@mail.com
    version: 0.0.1
  servers:
  - url: http://localhost/api/v1
  components:
    schemas:
      ...
    securitySchemes:
      bearerAuth:
        type: http
        bearerFormat: JWT
        scheme: bearer
  security:
  - bearerAuth: []
  </code></pre>
  
  <p>In the automatically generated swagger-ui that works perfectly fine, the same is true for postman when I download the OpenAPI spec and import it into Postman.</p>
  
  <p>However, when using the openapi-generator using the following command:</p>
  
  <pre><code>docker run --user `id -u`:`id -g` --rm -v ${PWD}:/local openapitools/openapi-generator-cli generate -i /local/api.json -g python -o /local/api
  </code></pre>
  
  <p>However, instead of the bearer token, it tries to use username and password instead:</p>
  
  <pre><code>def get_basic_auth_token(self):
      """Gets HTTP basic authentication header (string).
  
      :return: The token for basic HTTP authentication.
      """
      return urllib3.util.make_headers(
          basic_auth=self.username + ':' + self.password
      ).get('authorization')
  
  def auth_settings(self):
      """Gets Auth Settings dict for api client.
  
      :return: The Auth Settings information dict.
      """
      return {
          'bearerAuth':
              {
                  'type': 'basic',
                  'in': 'header',
                  'key': 'Authorization',
                  'value': self.get_basic_auth_token()
              },
  
      }
  </code></pre>
  
  <p>Note that here a username and password is used, and the auth_settings() function returns a basic auth. What do I have to do to use the Bearer authentication scheme in the generated code instead?</p>