Flake8 fixes for fuel_notify.py
Flake8 fixes for fuel_notify.py

Change-Id: Ia29fd0ad2c915b2c46ee5fe7b352568e6c083832

huntxu/fuel-library,SmartInfrastructures/fuel-library-dev,eayunstack/fuel-library,zhaochao/fuel-library,eayunstack/fuel-library,SmartInfrastructures/fuel-library-dev,huntxu/fuel-library,SmartInfrastructures/fuel-library-dev,zhaochao/fuel-library,stackforge/fuel-library,ddepaoli3/fuel-library-dev,xarses/fuel-library,stackforge/fuel-library,ddepaoli3/fuel-library-dev,ddepaoli3/fuel-library-dev,zhaochao/fuel-library,eayunstack/fuel-library,stackforge/fuel-library,SmartInfrastructures/fuel-library-dev,zhaochao/fuel-library,eayunstack/fuel-library,ddepaoli3/fuel-library-dev,huntxu/fuel-library,xarses/fuel-library,eayunstack/fuel-library,stackforge/fuel-library,zhaochao/fuel-library,ddepaoli3/fuel-library-dev,SmartInfrastructures/fuel-library-dev,xarses/fuel-library,huntxu/fuel-library,xarses/fuel-library,huntxu/fuel-library