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

Tehsmash/networking-cisco,hareeshpc/networking-cisco,Gitweijie/first_project,noironetworks/networking-cisco,hareeshpc/networking-cisco,openstack/networking-cisco,Tehsmash/networking-cisco,noironetworks/networking-cisco,openstack/networking-cisco,CiscoSystems/networking-cisco,CiscoSystems/networking-cisco,cisco-openstack/networking-cisco,nikolay-fedotov/networking-cisco,cisco-openstack/networking-cisco,Gitweijie/first_project