enable E713 in pep8 tests
enable E713 in pep8 tests

This change update the code style to enable the E713 check (test for membership
should be ‘not in’)

Partial-Bug: 1329017

Change-Id: I96f8b734db5964ef46d0911cb5f6e0b8c33c3119

openstack/neutron-fwaas,dougwig/x-neutron-fwaas,gaolichuang/neutron-fwaas,openstack/neutron-fwaas,citrix-openstack-build/neutron-fwaas,gaolichuang/neutron-fwaas