Logs missing for job running in new pipelines

[yatin]

I noticed while looking for logs for rocky/queens[1], Logs are pruned as these jobs are running in new pipelines(ex openstack-periodic-weekend-wednesday) which are not added in WHITELIST for pruner script[1] which were created like openstack-periodic-weekend-wednesday. Same will be true for other recently created pipelines(ex component, github etc).

[1] https://review.rdoproject.org/zuul/builds?pipeline=openstack-periodic-wednesday-weekend
[2] https://github.com/rdo-infra/rdo-infra-playbooks/blob/master/contrib/prune_logserver.sh#L42-L84