List all test cases

This api offers the interface to list all test cases
The testcases list will be returned
---
tags:
  - Testcases
definitions:
  Testcases:
    type: object
    properties:
      creds_name:
          $ref: '#/definitions/Tests'
  Tests:
    type: dict
responses:
  200:
    description: List all test cases
    schema:
      $ref: '#/definitions/Testcases'
    examples:
      "testcases": []