Manual podman pull fails within OCP 4 nodes

Issue

• Trying to pull images with podman pull fails within OpenShift 4 nodes:

  sh-4.4# podman pull registry.redhat.io/openshift4/ose-logging-fluentd
  Failed to pull image "registry.redhat.io/openshift4/ose-cluster-logging-operator@sha256:xxxxxxx": rpc error: code = Unknown desc = unable to retrieve auth token: invalid username/password: unauthorized: Please login to the Red Hat Registry using your Customer Portal credentials.
  

  sh-4.4# podman pull image-registry.openshift-image-registry.svc:5000/openshift4/ose-cluster-logging-operator:latest
  [...]
  Trying to pull image-registry.openshift-image-registry.svc:5000/openshift4/ose-cluster-logging-operator:latest...
  Error: Error initializing source docker://image-registry.openshift-image-registry.svc:5000/openshift4/ose-cluster-logging-operator:latest: Error reading manifest latest in image-registry.openshift-image-registry.svc:5000/openshift4/ose-cluster-logging-operator: unauthorized: authentication required
  

• After a successful podman login, podman pull fails with unauthorized error.