title: Homestead v6.1.0 doesn't apply set PHP5.6
body: <h1>Scenario</h1>
  
  <ul>
  <li>I've updated Vagrant to 1.9</li>
  <li>I only have box 3.0.0</li>
  <li>I've cloned the master branch of Homestead and checked out tag v6.1.0</li>
  </ul>
  
  <p>In <strong>Homestead.yaml</strong>, I've this site:</p>
  
  <pre><code>- map: m2azr.local
    to: /Code/m2azr.local
    php: "5.6"
  </code></pre>
  
  <p>When I'm doing <code>bash init.sh</code>, <code>vagrant up --provision</code> and <code>vagrant ssh</code>, I see there are <strong>3 php versions</strong> installed: 5.6, 7.0 and 7.1. So it seems I've the right Homestead version (described in <a href="https://laravel.com/docs/5.4/homestead" rel="nofollow noreferrer">https://laravel.com/docs/5.4/homestead</a>).</p>
  
  <h1>Problem</h1>
  
  <p>The set php version in Homestead.yaml is <strong>not</strong> applied for site <code>m2azr.local</code>:</p>
  
  <ul>
  <li><code>phpinfo()</code> shows php version <code>7.1.x</code></li>
  <li><code>composer install</code> shows an error <code>This package requires php ^5.6 but your PHP version (7.1.7) does not satisfy that requirement.</code></li>
  </ul>
  
  <p>Why is PHP5.6 not set?</p>