US06: GetEdgeTypeProperties
3 Scenarios
User Story
Scenario: Get properties for existing edge type
Given database contains an edge type with ID {edgeTypeId} that has properties
When I send a GET request to /api/edgetypes/{edgeTypeId}/properties
#UAC01
Then the response status should be 200 OK
#UAC02
And the response should contain the list of properties
#UAC03
And all properties should have EdgeTypeId set correctly