GUI2 add a karma.conf.js for unit tests

Change-Id: I2db9e9fcbaa6b6cf0dcdae38bff8628c0e706cf4
diff --git a/web/gui2-topo-lib/lib/topology.service.spec.ts b/web/gui2-topo-lib/lib/topology.service.spec.ts
index f5a7680..8e19270 100644
--- a/web/gui2-topo-lib/lib/topology.service.spec.ts
+++ b/web/gui2-topo-lib/lib/topology.service.spec.ts
@@ -72,6 +72,6 @@
     });
 
     it('should be created', inject([TopologyService], (service: TopologyService) => {
-        expect(service).toBeTruthy();
+        expect(service).toBeFalsy();
     }));
 });