The RHOCP image pruner fails with error: failed to verify certificate: x509: certificate signed by unknown authority

Issue

• The image pruner pods throws the following error:

failed to ping registry https://image-registry.openshift-image-registry.svc:5000: Get "https://image-registry.openshift-image-registry.svc:5000/": tls: failed to verify certificate: x509: certificate signed by unknown authority