Update OpenShift documentation (#1555)
Update OpenShift documentation (#1555)

Update versions and path, and add a troubleshooting section.
kubeflow/kfserving-lts,kubeflow/kfserving-lts,kubeflow/kfserving-lts,kubeflow/kfserving-lts,kubeflow/kfserving-lts,kubeflow/kfserving-lts