remove E112 hacking exemption and fix errors
remove E112 hacking exemption and fix errors

Change-Id: I6031ad2274c677b071a03068e5fb3c000fec7723
Partial-Bug: 1329017

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