REST service to delete an existing Rasa test story

[turnerrainer]

AS AN Architect I WANT to have a REST service to delete an existing Rasa test story SO THAT there wouldn't be duplicate services for it

Acceptance Criteria

Temporary list of endpoints - https://github.com/buerokratt/Buerokratt-onboarding/issues/8

• [ ] Use POST endpoint /rasa/test-stories/delete to delete an existing response
• [ ] Deleting a test story expects #106 to respond with HTTP 200
• [ ] Apply changes on Rasa tests/test_stories.yml
• [ ] When deleting a response, all of its sub-content gets deleted as well

Example

Input tests/test_stories.yml before deleting a specified story

stories:
- story: common_tervitus
  steps:
  - user: |
      tere
    intent: common_tervitus
  - action: utter_common_tervitus

- story: common_hüvasti_jätmine
  steps:
  - user: |
      headaega
    intent: common_hüvasti_jätmine
  - action: utter_common_hüvasti_jätmine

Output after a request to delete common_tervitus

stories:
- story: common_hüvasti_jätmine
  steps:
  - user: |
      headaega
    intent: common_hüvasti_jätmine
  - action: utter_common_hüvasti_jätmine

[RaulAltmae]

sample input for /rasa/test-stories/delete

{
  "story": "common_tervitus"
}

[turnerrainer]

@RaulAltmae please link this issue with an appropriate pull request.

[RaulAltmae]

Pull request https://github.com/buerokratt/Training-Module/pull/166