In template-jupyterhub.yaml should be dictionary for subjects

[rgr19]

Correct would be

- apiVersion: authorization.openshift.io/v1
  kind: RoleBinding
  metadata:
    name: ${APPLICATION_NAME}-edit
    labels:
      app: ${APPLICATION_NAME}
  subjects:
    - kind: ServiceAccount
      name: jupyter

Otherwise I had error:

$OC -n datascience apply -f ./config/template-jupyterhub.yaml && $OC -n datascience new-app --template jupyterhub --param APPLICATION_NAME=jupyter --dry-run
template.template.openshift.io/jupyterhub configured
error: error processing template "datascience/jupyterhub": v1.RoleBinding.Subjects: decode slice: expect [ or n, but found {, error found in #10 byte of ...|"jupyter"}}|..., bigger context ...|bjects":{"kind":"ServiceAccount","name":"jupyter"}}|...

[rgr19]

With that changes its passing validation

--> Deploying template "datascience/jupyterhub" to project datascience

 JupyterHub
 ---------
 Template for deploying a customized JupyterHub instance.

 * With parameters:
    * APPLICATION_NAME=jupyter
    * JUPYTERHUB_IMAGE=docker.io/orcunuso/jupyterhub:20200415
    * NOTEBOOK_IMAGE=docker.io/orcunuso/jupyternb-cpu:20200415
    * NOTEBOOK_CPU_REQUEST=0.5
    * NOTEBOOK_CPU_LIMIT=3
    * NOTEBOOK_MEM_REQUEST=4Gi
    * NOTEBOOK_MEM_LIMIT=16Gi
    * JUPYTERHUB_CONFIG=
    * DATABASE_PASSWORD=8ybp5SU1k0TvyrES # generated
    * COOKIE_SECRET=0cba8471e8a1b6a3c3873768d252dd78 # generated
    * DATABASE_DISKSIZE=5Gi
    * DATABASE_IMAGE=registry.redhat.io/rhscl/postgresql-96-rhel7:1-53
    * K8S_TOLERATION=datascience-node

--> Creating resources ...
configmap "jupyter-cfg" created (dry run)
serviceaccount "jupyter" created (dry run)
rolebinding.authorization.openshift.io "jupyter-edit" created (dry run)
deploymentconfig.apps.openshift.io "jupyter" created (dry run)
service "jupyter" created (dry run)
route.route.openshift.io "jupyter" created (dry run)
persistentvolumeclaim "jupyter-db" created (dry run)
deploymentconfig.apps.openshift.io "jupyter-db" created (dry run)
service "jupyter-db" created (dry run)
--> Success (dry run)