Move bandit to pep8 as generic linting target
Move bandit to pep8 as generic linting target

bandit is a security linter and can be made voting now. Instead of
starting another virtual machine, run it as part of the generic linting
target which is pep8.

Change-Id: I6a8f7aa2b60bd96d55b37b6cc2a371069d6d5e6a

dardelean/kolla-ansible,mrangana/kolla,coolsvap/kolla,coolsvap/kolla,intel-onp/kolla,nihilifer/kolla,dardelean/kolla-ansible,mrangana/kolla,GalenMa/kolla,intel-onp/kolla,rahulunair/kolla,nihilifer/kolla,rahulunair/kolla,openstack/kolla,coolsvap/kolla,stackforge/kolla,GalenMa/kolla,openstack/kolla,dardelean/kolla-ansible,stackforge/kolla,stackforge/kolla