Pin black, flake and pylint versions in tox.ini

Change-Id: I373f6188cbf04dfe6f3c8f8e9ef4f823cf6c3dcf
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
diff --git a/RO-VIM-aws/osm_rovim_aws/vimconn_aws.py b/RO-VIM-aws/osm_rovim_aws/vimconn_aws.py
index 393acba..db7e63e 100644
--- a/RO-VIM-aws/osm_rovim_aws/vimconn_aws.py
+++ b/RO-VIM-aws/osm_rovim_aws/vimconn_aws.py
@@ -1034,9 +1034,9 @@
                                     + interface.private_ip_address
                                 )
                             else:
-                                interface_dict[
-                                    "ip_address"
-                                ] = interface.private_ip_address
+                                interface_dict["ip_address"] = (
+                                    interface.private_ip_address
+                                )
 
                             instance_dict["interfaces"].append(interface_dict)
                     except Exception as e: