The neutron-sriov.yaml environment file erroneously indicates that containerized SR-IOV agent support is experimental
u/s master patch https://review.openstack.org/#/c/581031/ I'll add tracker for backport once it becomes available.
We missed a file when backporting the initial patch. https://review.opendev.org/#/c/663085/ should resolve it. Please note that there are some OVN related patches that still indicate experimental support. AFAIK, this is still valid for OVN deployments for currently GA'd versions of OSP.
According to our records, this should be resolved by openstack-tripleo-heat-templates-8.3.1-87.el7ost. This build is available now.
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, 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/RHBA-2020:0760