Add pep8 jobs for requestsexceptions
Add pep8 jobs for requestsexceptions

The repo now supports running pep8, and it has caught one actual bug so
far, so maybe running it isn't terrible.

Change-Id: Ibf95f087495cbc5161419136eeecb75d967d109b

dongwenjuan/project-config,noorul/os-project-config,Tesora/tesora-project-config,Tesora/tesora-project-config,openstack-infra/project-config,openstack-infra/project-config,noorul/os-project-config,dongwenjuan/project-config