Use Python 3 style super (#8777)

This is one of the things that newer versions of `pylint` complains about.

* git grep -l super\( | xargs sed -i 's/super([^)]*)/super()/g'

* fix spacing

certbot-dns-cloudflare/tests/dns_cloudflare_test.py

@@ -27,7 +27,7 @@ class AuthenticatorTest(test_util.TempDirTestCase, dns_test_common.BaseAuthentic
     def setUp(self):
         from certbot_dns_cloudflare._internal.dns_cloudflare import Authenticator
 
-        super(AuthenticatorTest, self).setUp()
+        super().setUp()
 
         path = os.path.join(self.tempdir, 'file.ini')
         dns_test_common.write({"cloudflare_email": EMAIL, "cloudflare_api_key": API_KEY}, path)