Improve acme and check dns before issuing cert

tests/cli/3_test_stack_services_status.py

@@ -27,12 +27,6 @@ class CliTestCaseStack(test.WOTestCase):
         self.app.run()
         self.app.close()
 
-    def test_wo_cli_stack_services_status_memcached(self):
-        self.app = get_test_app(argv=['stack', 'status', '--memcache'])
-        self.app.setup()
-        self.app.run()
-        self.app.close()
-
     def test_wo_cli_stack_services_status_all(self):
         self.app = get_test_app(argv=['stack', 'status'])
         self.app.setup()

tests/cli/plugins/test_example.py

@@ -2,6 +2,7 @@
 
 from wo.utils import test
 
+
 class ExamplePluginTestCase(test.WOTestCase):
     def test_load_example_plugin(self):
         self.app.setup()