Fix PEP-8 on config.py
Fix PEP-8 on config.py

LAL/openstack-lease-it,guillaume-philippon/openstack-lease-it,guillaume-philippon/openstack-lease-it,LAL/openstack-lease-it,LAL/openstack-lease-it,guillaume-philippon/openstack-lease-it,guillaume-philippon/openstack-lease-it,LAL/openstack-lease-it