Fix pep8 errors

Author: avara1986

examples/mininum_microservice_docker/main.py

@@ -1,5 +1,5 @@
-import os
 from flask import jsonify
+
 from pyms.flask.app import Microservice
 
 ms = Microservice(service="my-minimal-microservice", path=__file__)

tests/tests_config.py

@@ -3,7 +3,6 @@
 import unittest
 
 from pyms.config.conf import Config
-
 from pyms.config.confile import ConfFile
 from pyms.constants import CONFIGMAP_FILE_ENVIRONMENT, LOGGER_NAME
 from pyms.exceptions import AttrDoesNotExistException, ConfigDoesNotFoundException, ServiceDoesNotExistException
@@ -119,5 +118,6 @@ def test_empty_conf_three_levels(self):
         config = ConfFile(empty_init=True)
         self.assertEqual(config.my_ms.level_two.level_three, {})
 
+
 if __name__ == '__main__':
-    unittest.main()
+    unittest.main()