test/: PEP8 compliancy (#24803)

* test/: PEP8 compliancy

- Make PEP8 compliant

* Python3 chokes on casting int to bytes (#24952)

But if we tell the formatter that the var is a number, it works

test/units/plugins/connection/test_netconf.py

@@ -28,7 +28,6 @@ from io import StringIO
 
 from ansible.compat.tests import unittest
 from ansible.compat.tests.mock import patch, MagicMock, PropertyMock
-
 from ansible.errors import AnsibleConnectionFailure
 from ansible.playbook.play_context import PlayContext
 
@@ -38,6 +37,7 @@ builtin_import = __import__
 
 mock_ncclient = MagicMock(name='ncclient')
 
+
 def import_mock(name, *args):
     if name.startswith('ncclient'):
         return mock_ncclient
@@ -50,6 +50,7 @@ else:
     with patch('__builtin__.__import__', side_effect=import_mock):
         from ansible.plugins.connection import netconf
 
+
 class TestNetconfConnectionClass(unittest.TestCase):
 
     def test_netconf_init(self):
@@ -117,5 +118,3 @@ class TestNetconfConnectionClass(unittest.TestCase):
         self.assertEqual(1, rc)
         self.assertEqual('', out)
         self.assertEqual('unable to parse request', err)
-
-