Drop mox3 from karbor-dashboard

This patch does several things at once:

- Remove mox from KarborApiTest. Use mock instead
  of mox3 to mock out the karborclient.
- Use mock to mout the karborclient.
- Drop mox3 from the test-requirements.txt.

This is apart of the mox community goal for Rocky.

Change-Id: Iea9e65778777746682895521f17ca69f5c27f7fd
Signed-off-by: Charles Short <zulcss@gmail.com>

karbor_dashboard/test/helpers.py

@@ -12,9 +12,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+import mock
+
 from karbor_dashboard import api
 from karbor_dashboard.test import test_data
-from karborclient.v1 import client as karbor_client
 from openstack_dashboard.test import helpers
 
 
@@ -36,6 +37,5 @@ class APITestCase(helpers.APITestCase):
 
     def stub_karborclient(self):
         if not hasattr(self, "karborclient"):
-            self.mox.StubOutWithMock(karbor_client, 'Client')
-            self.karborclient = self.mox.CreateMock(karbor_client.Client)
+            self.karborclient = mock.Mock()
         return self.karborclient

test-requirements.txt

@@ -12,7 +12,6 @@ coverage!=4.4,>=4.0 # Apache-2.0
 django-nose>=1.4.4 # BSD
 docutils>=0.11 # OSI-Approved Open Source, Public Domain
 mock>=2.0.0 # BSD
-mox3>=0.20.0 # Apache-2.0
 nodeenv>=0.9.4 # BSD
 nose>=1.3.7 # LGPL
 nose-exclude>=0.3.0 # LGPL