By default we use interpolation for repo_ca_cert, it depends upon ca_cert_dir. ca_cert_dir was in a different section, which causes interpolation problems.
ca_cert_dir has been moved from the server section into rhsm. Default values will be used for ca_cert_dir and repo_ca_cert if ca_cert_dir is not present in the rhsm section, and repo_ca_cert uses interpolation (ex: %(ca_cert_dir)sredhat-uep.pem)
Move the ca_cert_directory config line from the [server] section into [rhsm]
Functionality will remain the same as older versions