Set the backup task progress in the task only

src/updater.js

@@ -10,7 +10,6 @@ var assert = require('assert'),
     async = require('async'),
     child_process = require('child_process'),
     backups = require('./backups.js'),
-    caas = require('./caas.js'),
     config = require('./config.js'),
     crypto = require('crypto'),
     debug = require('debug')('box:updater'),
@@ -168,7 +167,7 @@ function doUpdate(boxUpdateInfo, callback) {
 
         tasks.setProgress(tasks.TASK_UPDATE, { percent: 10, message: 'Backing up' }, NOOP_CALLBACK);
 
-        backups.backupBoxAndApps({ userId: null, username: 'updater' }, function (error) {
+        backups.backupBoxAndApps({ userId: null, username: 'updater' }, (progress) => tasks.setProgress(tasks.TASK_MIGRATE, { percent: 10+progress.percent*70/100, message: progress.message }, NOOP_CALLBACK), function (error) {
             if (error) return updateError(error);
 
             debug('updating box %s', boxUpdateInfo.sourceTarballUrl);