Description of problem: osp15 overcloud deployment failed with : Failed to create action: nova.certs_convert_into_with_meta: AttributeError: 'Client' object has no attribute 'certs' Version-Release number of selected component (if applicable): osp15 , RHOS_TRUNK-15.0-RHEL-8-20190722.n.1 How reproducible: 100% Steps to Reproduce: rerun job : https://rhos-qe-jenkins.rhev-ci-vms.eng.rdu2.redhat.com/view/DFG/view/pidone/view/sanity/job/DFG-pidone-sanity-15_director-rhel-virthost-3cont_2comp-ipv6-geneve-sanity/ Additional info: logs and files at : https://rhos-qe-jenkins.rhev-ci-vms.eng.rdu2.redhat.com/view/DFG/view/pidone/view/sanity/job/DFG-pidone-sanity-15_director-rhel-virthost-3cont_2comp-ipv6-geneve-sanity/13/artifact/ and : https://rhos-qe-jenkins.rhev-ci-vms.eng.rdu2.redhat.com/view/DFG/view/pidone/view/sanity/job/DFG-pidone-sanity-15_director-rhel-virthost-3cont_2comp-ipv6-geneve-sanity/12/artifact/