[tripleo] x509 certificate Issue in Overcloud Deployment

Hi Team, I am trying to install the Tripleo setup on the Openstack Train. While deploying the overcloud, I am getting an x509 certificate error in downloading the images from quay.io This is because of a proxy certificate in the LAB. Before installing Undercloud, I manually placed the certificate in order to avoid this issue. How can I take care of placing such certificates in case of an overcloud. Regards Anirudh Gupta