Fix setting empty storage class for Jupyter PVC

Signed-off-by: Shiva Krishna, Merla <[email protected]>

Author: shivamerla

test/e2e/nemo-dependencies/jupyter/templates/pvc.yaml.j2

@@ -4,7 +4,10 @@ metadata:
   name: {{ pvc_name }}
   namespace: {{ namespace }}
 spec:
-  storageClassName: {{ '"local-path"' if localPathProvisioner.enabled else pvc.storage_class | to_json }}
+{% set scn = 'local-path' if localPathProvisioner.enabled else pvc.storage_class %}
+{% if scn != '' and scn is not none %}
+  storageClassName: "{{ scn }}"
+{% endif %}
   accessModes:
     - ReadWriteOnce
   resources: