title: APP_INITIALIZER in angular 2.4.x has stopped working
body: <p>I have APP_INITIALIZER preloading my config which was working fine till i have upgraded from 2.0.2 to 2.4.2</p>
  
  <p>I am the only one experiencing this problem? </p>
  
  <pre><code>providers: [
      ConfigService,
      {
          provide: APP_INITIALIZER,
          useFactory: (config:ConfigService) =&gt; () =&gt; {
              return config.load();
          },
      deps: [ConfigService, Http],
      multi: true
  },
  .........
  </code></pre>
  
  <p>config.loda() is getting intiilasied after componetns and servics </p>