Fix auth tests

Author: djhi

cypress/e2e/auth.cy.js

@@ -20,7 +20,7 @@ describe('Authentication', () => {
     it('should not login with incorrect credentials', () => {
         ListPage.navigate();
         ListPage.logout();
-        LoginPage.login('foo', 'bar');
+        LoginPage.login('foo', 'bar', true);
         cy.contains('Authentication failed, please retry');
     });
     it('should login with correct credentials', () => {

cypress/support/LoginPage.js

@@ -16,11 +16,13 @@ export default url => ({
         cy.get(this.elements.username);
     },
 
-    login(username = 'login', password = 'password') {
+    login(username = 'login', password = 'password', shouldFail = false) {
         cy.get(this.elements.username).clear().type(username);
         cy.get(this.elements.password).clear().type(password);
         cy.get(this.elements.submitButton).click();
-        cy.get(this.elements.title);
-        cy.get(this.elements.appLoader);
+        if (!shouldFail) {
+            cy.get(this.elements.title);
+            cy.get(this.elements.appLoader);
+        }
     },
 });