Reading subscribers from TenantRoot model

Change-Id: Ifdf5df41faddb57ccbd3da2f7de798a8224d932e
diff --git a/src/app/service-graph/services/graph.store.spec.ts b/src/app/service-graph/services/graph.store.spec.ts
index 27c6ccd..6d50a5a 100644
--- a/src/app/service-graph/services/graph.store.spec.ts
+++ b/src/app/service-graph/services/graph.store.spec.ts
@@ -13,6 +13,7 @@
   service: new Subject<any>(),
   tenant: new Subject<any>(),
   subscriber: new Subject<any>(),
+  tenantroot: new Subject<any>(),
   network: new Subject<any>(),
   servicedependency: new Subject<any>()
 };