[FEATURE]: Improve the OpenAPI documentation

[JCHacking]

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Describe the Feature Request

Improve OpenAPI documentation to improve these aspects:

• Possible answers (now all according to OpenAPI are 200)
• Improve if possible some answers or use cases that give unexpected results

Describe Preferred Solution

Modify rest conductor to add better definitions for OpenAPI

[JCHacking]

Good morning, I am addressing this improvement.
Who should I ask about "strange" behaviors I see? And where? Thanks!!!

For now I comment them here, if it is necessary that I move them to a discussion or mention someone let me know.

• POST /api/admin/sweep/requeue/194f1b36-0dcf-4829-bff5-49d96107b6fd
  
  STATUS CODE -> 200
  true.194f1b36-0dcf-4829-bff5-49d96107b6fd
  

  Does this answer make sense? Or should we return a 204 in case it is pushed and a 500 in case it is not?

• POST /api/admin/consistency/verifyAndRepair/194f1b36-0dcf-4829-bff5-49d96107b6fd
  
  STATUS CODE -> 200
  false
  

  Does this answer make sense? Or should we return a 204 in case it is repaired and a 500 in case it is not?

• POST /api/admin/consistency/verifyAndRepair/test
  
  STATUS CODE -> 500
  {
    "status": 500,
    "message": "Cannot invoke \"com.netflix.conductor.model.WorkflowModel.getStatus()\" because \"workflow\" is null",
    "instance": "2164be719527",
    "retryable": false
  }
  

  Should it be an error more like 422 or 400?

• GET /api/admin/queues?verbose=true1
  
  STATUS CODE -> 500
  {
    "status": 500,
    "message": "Failed to convert value of type 'java.lang.String' to required type 'boolean'; Invalid boolean value [true1]",
    "instance": "2164be719527",
    "retryable": false
  }
  

  Should it be an error more like 422 or 400?