change user_name still used as login and add display_name for dashboard view instead of username on login

backend/apps/operations/tests_chicken_counting_edge.py

@@ -62,7 +62,7 @@ class AggregationTests(TestCase):
 )
 class SyncChickenCountingTests(TestCase):
     def setUp(self):
-        user = User.objects.create_user(user_login="sync-user", password="secret")
+        user = User.objects.create_user(user_name="sync-user", password="secret")
         site = Site.objects.create(site_name="Sukawarna", user=user)
         self.kandang = Kandang.objects.create(kandang_name="Kandang 1", site=site)
         self.cycle = Cycle.objects.create(
@@ -130,7 +130,7 @@ class SyncChickenCountingTests(TestCase):
 )
 class ChickenCountingSyncApiTests(TestCase):
     def setUp(self):
-        self.user = User.objects.create_user(user_login="tester", password="secret")
+        self.user = User.objects.create_user(user_name="tester", password="secret")
         self.client = APIClient()
         self.client.force_authenticate(self.user)
         site = Site.objects.create(site_name="Sukawarna", user=self.user)