layoutName Ember 1.13

application.controller.js

import Ember from 'ember';

export default Ember.Controller.extend({  
  emberVersion: Ember.computed(function() {
    return Ember.VERSION;
  })
});

application.template.hbs

<h1>Ember Version {{emberVersion}}</h1>

<h2>Demonstration of layoutName in Component</h2>

\{{my-component}} rendered below the hr. Note that it *does* use the other-component template because it has the property `layoutName: 'other-component'`.
<hr>
{{my-component}}

my-component.component.js

import Ember from 'ember';

export default Ember.Component.extend({
  layoutName: 'other-component'
});

my-component.template.hbs

<h3>my-component.hbs</h3>

other-component.component.js

import Ember from 'ember';

export default Ember.Component.extend({
});

other-component.template.hbs

<h3>other-component.hbs</h3>

twiddle.json

{
  "version": "0.4.13",
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/1.13.13/ember.debug.js",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/2.2.1/ember-data.js",
    "ember-template-compiler": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/1.13.13/ember-template-compiler.js"
  }
}