Since my posting, I've remembered that the last time I installed LO I had the same problem and my "solution" was to use rpm -ivh *.rpm instead of yum. that workaround works fine.
Perhaps having moved over to the dark-side (rpm) you will be stuck using that, until redeemed by CentOS 8 with dnf :-)
-- Cheers Bill _______________________________________________ CentOS mailing list CentOS@xxxxxxxxxx https://lists.centos.org/mailman/listinfo/centos