Reading subscribers from TenantRoot model

Change-Id: Ifdf5df41faddb57ccbd3da2f7de798a8224d932e
diff --git a/src/app/service-graph/services/graph.store.ts b/src/app/service-graph/services/graph.store.ts
index 08ec52b..7908440 100644
--- a/src/app/service-graph/services/graph.store.ts
+++ b/src/app/service-graph/services/graph.store.ts
@@ -98,7 +98,7 @@
         }
       );
 
-    this.SubscriberSubscription = this.XosModelStore.query('Subscriber', '/core/subscribers')
+    this.SubscriberSubscription = this.XosModelStore.query('Tenantroot', '/core/tenantroots')
       .subscribe(
         (res) => {
           this.combineData(res, 'subscribers');
@@ -192,7 +192,8 @@
       targetId = this.d3Id('network', tenant.subscriber_network_id);
     }
     else if (tenant.subscriber_root_id) {
-      targetId = this.d3Id('subscriber', tenant.subscriber_root_id);
+      // FIXME understand what's the correct model for the subscriber
+      targetId = this.d3Id('tenantroot', tenant.subscriber_root_id);
     }
     return targetId;
   }