Updated authentication scenarios.

tests.py

@@ -1,12 +1,12 @@
 #!/usr/bin/env python3
 import unittest
 import requests
-from azure.identity import DefaultAzureCredential
-from sk.devops import DEVOPS_SCOPE, Organization, Repository, Project, Item
+from sk.devops import Organization, Repository, Project, Item
+from sk.azure import get_token
 
 # Get the token outside the test class to speed up tests.
 # Each Unit test instantinates the class, so doing it here avoids repeated authentication.
-token = DefaultAzureCredential().get_token(DEVOPS_SCOPE).token
+token = get_token()
 
 class Test01(unittest.TestCase):
     def setUp(self):