Updating tox.ini

Change-Id: I87574da5911b4c827cf2543ecc9e9f404da96f85
Signed-off-by: sousaedu <eduardo.sousa@canonical.com>
diff --git a/RO-plugin/osm_ro_plugin/sdn_dummy.py b/RO-plugin/osm_ro_plugin/sdn_dummy.py
index fb7c552..0318156 100644
--- a/RO-plugin/osm_ro_plugin/sdn_dummy.py
+++ b/RO-plugin/osm_ro_plugin/sdn_dummy.py
@@ -20,10 +20,12 @@
 This WIM does nothing and allows using it for testing and when no WIM is needed
 """
 
+from http import HTTPStatus
 import logging
 from uuid import uuid4
+
 from osm_ro_plugin.sdnconn import SdnConnectorBase, SdnConnectorError
-from http import HTTPStatus
+
 
 __author__ = "Alfonso Tierno <alfonso.tiernosepulveda@telefonica.com>"