title: Unable to install vagrant plugin due to SSL_Connect error
body: <p>Hello so I am trying to install a vagrant plugin but I getting the following error in mingW64</p>
  
  <pre><code>$ vagrant plugin install vagrant-winnfsd
  Installing the 'vagrant-winnfsd' plugin. This can take a few minutes...
  Vagrant failed to load a configured plugin source. This can be caused
  by a variety of issues including: transient connectivity issues, proxy
  filtering rejecting access to a configured plugin source, or a configured
  plugin source not responding correctly. Please review the error message
  below to help resolve the issue:
  
   SSL_connect returned=1 errno=0 state=error: certificate verify failed (https://api.rubygems.org/specs.4.8.gz)
  
  Source: https://rubygems.org/
  </code></pre>
  
  <p>I am behind a firewall and have to pass the company cert manually. I updated my Ruby certs but still no luck. Anyone have any clue why vagrant is not taking my pem/certs?</p>