base-base-images: Use https for yum repo buildlogs.centos.org is now on https. yum failed to follow the http to https redirect, so change the URL to https to avoid the redirect:
http://buildlogs.centos.org/centos/7/paas/x86_64/openshift-origin36/repodata/repomd.xml: [Errno 14] HTTPS Error 302 - Found (commit: 1684e8f)