Enable pep8 N341
Enable pep8 N341

Change-Id: Ia7160cf34a5073f0ad69aaae2e2e0db8ade2b900

stackforge/networking-bigswitch,openstack/networking-bigswitch,wolverineav/networking-bigswitch,wolverineav/networking-bigswitch,openstack/networking-bigswitch,stackforge/networking-bigswitch