Respect outputPaths in ember-cli-build

[ultimatemonty]

I recently implemented this addon and noticed that the index.json output does not respect the outputPaths config setting in ember-cli-build.js. Here is a sample of my configuration and the resulting index.json output from ember deploy production:

// ember-cli-build.js
const isProduction = ( process.env.EMBER_ENV || 'development' ) === 'production';
const assetPath = isProduction ? '' : '/assets';

module.exports = function(defaults) {
  var app = new EmberApp(defaults, {
    outputPaths: {
      app: {
        html: 'index.html',
        css: {
          'app': assetPath + '/app.css'
        },
        js: assetPath + '/app.js'
      },
      vendor: {
        css: assetPath + '/vendor.css',
        js: assetPath + '/vendor.js'
      }
    }
  });
}

// config/deploy.js
var ENV = {
  build: {},
  'json-config': {
    jsonBlueprint(context, pluginHelper) {
      var jsonBlueprint = pluginHelper.readConfigDefault('jsonBlueprint');
      jsonBlueprint.script.includeContent = true;
      return jsonBlueprint;
    }
  }
};

// index.json
{
  "base": [],
  "meta": [],
  "link": [{
    "rel": "stylesheet",
    "href": "assets/vendor-13455b8fd285c046141dd54ae73890f8.css"
  }, {
    "rel": "stylesheet",
    "href": "assets/app-efe517a8fe179e4392e64c2a9ce8fe05.css"
  }],
  "script": [{
    "src": "assets/vendor-127d2a9b59896b5ddff4de18193179cb.js"
  }, {
    "src": "assets/app-774827c1c48acfbdb034cbc16d3f5fb7.js"
  }]
}