Fake deprecated nova client properties

Mox doesn't like the new nova client python properties that
were recently added to handle deprecations; just fake them out.

- UnknownMethodCallError: Method called is not a member of the object:
projectid

Change-Id: Iea69ee5c4a8f40eadc15391938443b04116cb3c3

openstack_dashboard/test/helpers.py

@@ -444,6 +444,8 @@ class APITestCase(TestCase):
             # compatible to 2.0 anyway.
             api_version = nova_api_versions.APIVersion('2.1')
             nova_client.Client.api_version = api_version
+            nova_client.Client.projectid = 'fake_project'
+            nova_client.Client.tenant_id = 'fake_tenant'
             self.novaclient = self.mox.CreateMock(nova_client.Client)
         return self.novaclient