Added logout

Change-Id: If09690e089976244ded58a27b1f35a3a850ae2d1
diff --git a/src/app/datasources/rest/auth.rest.spec.ts b/src/app/datasources/rest/auth.rest.spec.ts
index 85aefb4..16c0f8d 100644
--- a/src/app/datasources/rest/auth.rest.spec.ts
+++ b/src/app/datasources/rest/auth.rest.spec.ts
@@ -69,9 +69,9 @@
     it('should remove user auth from cookies', (done) => {
       service.logout()
         .then((res) => {
-          expect($cookies.get('xoscsrftoken')).toEqual(null);
-          expect($cookies.get('xossessionid')).toEqual(null);
-          expect($cookies.get('xosuser')).toEqual(null);
+          expect($cookies.get('xoscsrftoken')).toEqual(undefined);
+          expect($cookies.get('xossessionid')).toEqual(undefined);
+          expect($cookies.get('xosuser')).toEqual(undefined);
           done();
         })
         .catch(e => {