Per details from cloned bugs, PR https://github.com/openshift/jenkins/pull/853 updated the upstream master branch (which is currently for 4.2) The osbs/brew jobs are not ready yet, working with ART.
The created Kubernetes Pod Template using the ConfigMap style will not removed more than a dozen hours. Verified with jenkins image registry.svc.ci.openshift.org/ocp/4.2-2019-05-27-211046@sha256:f2d60cfc24ce881c4def3bc3bc4b1c8ab5fd031508c12b3a6bd85f1dbb52081a(get from 4.2.0-0.ci-2019-05-27-211046 payload) with openshift-sync:1.0.37
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-2019:2922