Fix bug 2337: Grafana dashboards do not work when NG-SA is enabled

Change-Id: If46838f618dd83e2456a18d4426329b848907c17
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>

installers/helm/osm/templates/prometheus/prometheus-recordingrules-configmap.yaml

@@ -28,7 +28,7 @@ data:
       - name: osm_metric_rules
         rules:
         - record: vm_status_extended
-          expr: (last_over_time(vm_status[1m]) * on (vm_id, vim_id) group_left(ns_id, vnf_id, vdu_id, project_id, job, vdu_name, vnf_member_index) last_over_time(ns_topology[1m])) or (last_over_time(ns_topology[1m]) * -1)
+          expr: (last_over_time(vm_status[1m]) * on (vm_id, vim_id) group_left(ns_id, vnf_id, vdu_id, project_id, job, vdu_name, ns_name, vnf_member_index) last_over_time(ns_topology[1m])) or (last_over_time(ns_topology[1m]) * -1)
           labels:
             job: osm_prometheus
         - record: vnf_status