firewall: fixing remaining pep8 errors

firewall/tests.py

 from django.test import TestCase
 from admin import HostAdmin
 
+
 class MockInstance:
     def __init__(self, groups):
         self.groups = MockGroups(groups)
 
+
 class MockGroup:
     def __init__(self, name):
         self.name = name
 
+
 class MockGroups:
     def __init__(self, groups):
         self.groups = groups
@@ -16,6 +19,7 @@ class MockGroups:
     def all(self):
         return self.groups
 
+
 class HostAdminTestCase(TestCase):
     def test_no_groups(self):
         instance = MockInstance([])

firewall/views.py

@@ -54,10 +54,12 @@ def firewall_api(request):
                     translation.activate(lang)
                     msg = render_to_string(
                         'mails/notification-ban-now.txt',
-                        {'user': user,
+                        {
+                            'user': user,
                             'bl': obj,
                             'instance:': obj.host.instance_set.get(),
-                        'url': settings.CLOUD_URL})
+                            'url': settings.CLOUD_URL
+                        })
                     SendMailTask.delay(
                         to=obj.host.owner.email,
                         subject='[IK Cloud] %s' %