--- upgrade: - | Replace any call in your code to credentials_factory.DEFAULT_PARAMS with a call to config.service_client_config(). fixes: - | The credentials_factory module used to load configuration at import time which caused configuration being loaded at test discovery time. This was fixed by removing the DEFAULT_PARAMS variable. This variable was redundant (and outdated), the same dictionary (but up to date) can be obtained via invoking config.service_client_config() with no service parameter.