Build URL safely to avoid formatting issues

[mjyeaney]

In the case below, we should be building / constructing service URL's using standard URI builder libraries instead of string formatting in order to avoid issues with path separators, well-formed URL's, invalid protocols, etc.

CustomVisionParallelScoring/src/ModelScoring.py

Line 45 in b597ce2

apiUrl = f"{self.serviceEndpoint}customvision/v3.0/Prediction/{self.projectId}/detect/iterations/{self.publishIterationName}/image/nostore"