As seen in the patch to fix this, I think this problem occurs because an unless clause that prevents the renewed cert from being updated and trusted because it checks if the current cert is not expired. The fix removes this unless clause.
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 (Red Hat OpenStack Platform 13.0 bug fix and enhancement 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-2021:2385