Simple Edge Discovery needs Gherkin .feature file

Commonalities [API readiness checklist](https://github.com/camaraproject/Commonalities/blob/main/documentation/API-Readiness-Checklist.md) and [API Testing Guidelines](https://github.com/camaraproject/Commonalities/blob/main/documentation/API-Testing-Guidelines.md) require a Gherkin `.feature` test file to be added to the repository`Test_Definitions` directory