Use oauth2 from google-auth
oauth2client is deprecated [1], use google-auth.
[1] (see Note)
Related-Issue:
@@ -19,7 +19,7 @@ import tempfile
import urllib3
import yaml
-from oauth2client.client import GoogleCredentials
+from google.oauth2.credentials import Credentials
from kubernetes.client import ApiClient, ConfigurationObject, configuration
