[Spring] Cookie parameter not being generated.

Description

Cookie parameters are not being generated for Java language.

Swagger-codegen version

3.0.13

Swagger declaration file content or url

openapi: 3.0.0
info:
  title: fun!
  version: 1.0.1
servers:
- url: "/v1"
paths:
  "/one":
    get:
      operationId: duplicate
      parameters:
        - in: cookie
          description: cookie
          name: jsession
          required: true
          schema:
            type: string
      responses:
        '200':
          description: success

Command line used for generation

Language: spring
Library: spring-boot
InterfaceOnly: true

Steps to reproduce

Use the yaml above to generate sources with the options above.

Related issues/PRs

I found no PRs related, but there was one similar [issue](https://github.com/swagger-api/swagger-codegen-generators/issues/259 reported.

Suggest a fix/enhancement

The fix is going on this repo and swagger-codegen.

PRs:
swagger-codegen-generators https://github.com/swagger-api/swagger-codegen-generators/pull/524

swagger-codegen https://github.com/swagger-api/swagger-codegen/pull/9825

Start with the OpenAPI YAML and the Spring/spring-boot generation options described in the issue, then inspect the linked swagger-codegen-generators PR 524 and swagger-codegen PR 9825. Done means generating the Java Spring interface from the example and confirming that the required jsession cookie parameter is present.