fix: DM ConfigMap namespace & README tweak

Author: Alan Christie

README.md

@@ -99,8 +99,8 @@ needs. Then deploy, using Ansible, from the root of the project: -
     ansible-playbook -e @${PARAMS}.yaml site.yaml
 
 That deploys the operator and its CRD to your chosen operator namespace.
-To deploy the Data Manager RBAC objects you need to run the
-`site_dm.yaml` playbook: -
+To deploy the Data Manager RBAC and Jupyter notebook configuration objects
+you need to run the `site_dm.yaml` playbook: -
 
     ansible-playbook -e @${PARAMS}.yaml site_dm.yaml
 

roles/operator/templates/configmap-data-manager.yaml.j2

@@ -13,7 +13,7 @@ kind: ConfigMap
 apiVersion: v1
 metadata:
   name: jupyternotebooks.squonk.it
-  namespace: {{ dt_namespace }}
+  namespace: {{ jo_dmapi_namespace }}
 data:
   dm-app.config: |
     [public image variants]