updating custom imports to import relatively instead of from namespace
@@ -9,8 +9,8 @@ import inspect
from collections import namedtuple
from requests.auth import AuthBase
from requests.cookies import extract_cookies_to_jar
-from azure.keyvault import HttpChallenge
-from azure.keyvault import HttpBearerChallengeCache as ChallengeCache
+from .http_challenge import HttpChallenge
+from . import http_bearer_challenge_cache as ChallengeCache
from msrest.authentication import OAuthTokenAuthentication
from .http_message_security import HttpMessageSecurity
from .internal import _RsaKey
