Fix unit tests

Author: cderici

juju/controller.py

@@ -244,7 +244,7 @@ async def add_credential(self, name=None, credential=None, cloud=None,
         log.debug('Uploading credential %s', name)
         cloud_facade = client.CloudFacade.from_connection(self.connection())
         tagged_credentials = [
-            client.UpdateCloudCredential(
+            client.TaggedCredential(
                 tag=tag.credential(cloud, tag.untag('user-', owner), name),
                 credential=credential,
             )]

tests/unit/test_client.py

@@ -16,7 +16,7 @@ def test_basics():
 
 def test_from_connection():
     connection = mock.Mock()
-    connection.facades = {"Action": 2}
+    connection.facades = {"Action": 7}
     connection.info = {"server-version": '3.0'}
     action_facade = client.ActionFacade.from_connection(connection)
     assert action_facade