fix(services): repair flaky e2e test (#298)

This commit fixes a flaky end to end test that could randomly choose a
non-existent service to update.

client/test/e2e/services/services.spec.js

@@ -1,4 +1,4 @@
-/*global it, element, by, beforeEach, inject, browser */
+/* global element, by, browser */
 
 var chai = require('chai');
 var expect = chai.expect;
@@ -16,7 +16,7 @@ describe('Services Module', function () {
   };
 
   var DEFAULT_SERVICE = 4;
-  var SERVICE_RANK = helpers.random(DEFAULT_SERVICE);
+  var SERVICE_RANK = 4;
 
   var DELETE_SUCCESS = 1;
   var DELETE_ERROR = 3;
@@ -96,4 +96,4 @@ describe('Services Module', function () {
     browser.switchTo().alert().dismiss();
     FormUtils.exists(by.id('default'), true);
   });
-});
+});