Red Hat OpenShift Container Platform 4 : Image-Pruner is failing due to image reference format error

Issue

• Automatic image pruning is failing in OpenShift ( OCP ) 4 with one of the following messages:

  W0819 00:01:40.360771 1 prune.go:577] Unable to parse DockerImageReference "badimage:tag #test.redhat.com:5000/test/containers/test:0.0.1" of Deployment[plugins/template]: invalid reference format - skipping
  W0819 00:01:40.373565 1 prune.go:577] Unable to parse DockerImageReference "badimage:tag #test.redhat.com:5000/test/containers/test:0.0.1" of ReplicaSet[plugins/template-76bbf6df64]: invalid reference format - skipping
  

  I0407 00:00:09.031647       1 prune.go:339] Creating image pruner with keepYoungerThan=1h0m0s, keepTagRevisions=3, pruneOverSizeLimit=<nil>, allImages=true
  Failed to build graph!
  
  The following objects have invalid references:
  
  replicaset/example-84f9495b5 namespace=example-test: container nginx: invalid image reference "registry.example.com:8082/example/example-nginx/": invalid reference format
  
  Either fix the references or delete the objects to make the pruner proceed.
  error: failed to build graph - no changes made