Override get_response to handle conversations
Override get_response to handle conversations

Adds the possibility to add a responses list in the test case. The test
will respond with each of the entries in the list to get_response
requests.

Ex:
{
  [...]
  "responses": ["yes", "Miami"]
}

MycroftAI/mycroft-core,forslund/mycroft-core,MycroftAI/mycroft-core,linuxipho/mycroft-core,linuxipho/mycroft-core,Dark5ide/mycroft-core,Dark5ide/mycroft-core,forslund/mycroft-core