Added missing cleanup-images in setup.cfg
Added missing cleanup-images in setup.cfg

The destroy playbook calls the cleanup-images script.  All other
scripts related to destroy were in setup.cfg while cleanup-images
was missing.

TrivialFix

Change-Id: I3d5dc435d03aded9e8b415dda8435b5e1c5ec937

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