Currently, the tripleo_backup_and_restore_historical variable is evaluated as string, and, as such, tripleo_backup_and_restore_historical: false returns "true". This should be fixed for false to mean "false".
QE Validation: if tripleo_backup_and_restore_historical == false then, no time stamp on *.iso names.
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 (Release of components for Red Hat OpenStack Platform 17.0 (Wallaby)), 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/RHEA-2022:6543