Description of problem:

All users have permission to spawn Jupiter notebooks when groups in rhods-groups-config setting is empty

Prerequisites (if any, like setup, operators/versions):

ODS 1.0.13

Steps to Reproduce

1. Create a configmap with the next configuration
2. kind: ConfigMap
   apiVersion: v1
   metadata:
   name: rhods-groups-config
   namespace: redhat-ods-applications
   labels:
   app: jupyterhub
   opendatahub.io/modified: 'true'
   data:
   admin_groups: ''
   allowed_groups: ''
3. oc apply -f <configmap_name>

Actual results:

All users can spawn a Jupiter notebook

Expected results:

none user can spawn Jupiter notebook

Reproducibility (Always/Intermittent/Only Once):

Always

Build Details:

Additional info: