Fix API's ability to build URI if swagger file does not contain full url

[sampacos]

Some web services might have a swagger file that does not specify its full URL. Given that we still have the URL of the API that's in the API yaml object, we can still build a URI for sending web requests. we should handle this error so it doesn't fail tests

[tyBouch]

I believe we can close this as the branch used to fix it was merged if I recall.