ovirt doesn't support this service variant.
Veified with a dummy PR upgrade uses the 4.7 test image: https://prow.ci.openshift.org/view/gs/origin-ci-test/pr-logs/pull/openshift_release/9763/rehearse-9763-release-openshift-ocp-installer-e2e-ovirt-upgrade-4.5-stable-to-4.6-ci/1314542840541351936 YOu can see the testcase passed and we no longer hit the load balancer issue
*** Bug 1849690 has been marked as a duplicate of this bug. ***
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory (Moderate: OpenShift Container Platform 4.7.0 security, bug fix, and enhancement update), and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHSA-2020:5633