add group description for jupyter admin group

Author: mishaschwartz

birdhouse/components/jupyterhub/config/magpie/config.yml.template

@@ -9,6 +9,11 @@ providers:
     type: api
     sync_type: api
 
+groups:
+  - name: ${JUPYTERHUB_ADMIN_GROUP_NAME}
+    description: Members of this group are given admin permissions on jupyterhub
+    discoverable: false
+
 permissions:
   - service: jupyterhub
     resource: /