title: No provider for ControlContainer when a child component has a ngModelGroup
body: <p>I can't seem to figure this out, it's simply not working.</p>
  
  <p>This is the original <a href="http://embed.plnkr.co/LLf7Il/" rel="noreferrer">plunker</a> which is written by Pascal Prekht , which is an explanation on template driven forms: </p>
  
  <p>And <a href="https://embed.plnkr.co/Q8pjSIVJHhfubILtvqWw/" rel="noreferrer">here</a> is my fork which is exactly the same thing , except I'm trying to load one of the fieldsets as a separate child component.</p>
  
  <p>Here is the code :</p>
  
  <pre><code>@Component({
    selector:'form-group-component',
    template:`
      &lt;fieldset ngModelGroup="anotherAddress"&gt;
        &lt;div&gt;
          &lt;label&gt;Street2:&lt;/label&gt;
          &lt;input type="text" name="street2" ngModel&gt;
        &lt;/div&gt;
  
      &lt;/fieldset&gt;
  
    `
  })
  export class FormGroupComponent{
  
  }
  
  @Component({
    selector: 'form-component',
    directives:[FormGroupComponent],
    template: `
      &lt;form #form="ngForm"&gt;
  
        &lt;form-group-component&gt;&lt;/form-group-component&gt;  
  
        &lt;fieldset ngModelGroup="address"&gt;
          &lt;div&gt;
            &lt;label&gt;Street:&lt;/label&gt;
            &lt;input type="text" name="street" ngModel&gt;
          &lt;/div&gt;
          &lt;div&gt;
            &lt;label&gt;Zip:&lt;/label&gt;
            &lt;input type="text" name="zip" ngModel&gt;
          &lt;/div&gt;
          &lt;div&gt;
            &lt;label&gt;City:&lt;/label&gt;
            &lt;input type="text" name="city" ngModel&gt;
          &lt;/div&gt;
        &lt;/fieldset&gt;
  
      &lt;/form&gt;
    `
  })
  export class FormComponent {
  
  
  }
  </code></pre>
  
  <p>So after cutting one of the feildsets and loading it inside a seperate directive , it won't work anymore!,</p>
  
  <p>There are couple of closed issues , but non of them is working.</p>
  
  <p><a href="https://github.com/mgechev/angular2-seed/issues/399" rel="noreferrer">This </a> 
  and <a href="https://github.com/angular/angular/issues/6374" rel="noreferrer">This</a></p>