title: Pass vault password to vagrants ansible_local provisioner
body: <p>I'm using the <code>ansible_local</code> provisioner for my vagrant box. Some of my variables should be stored in a vault file.</p>
  
  <p>While the ansible provisioner provides <code>ask_vault_pass</code> as configuration option (<a href="https://www.vagrantup.com/docs/provisioning/ansible.html#ask_vault_pass" rel="nofollow noreferrer">https://www.vagrantup.com/docs/provisioning/ansible.html#ask_vault_pass</a>), the <code>ansible_local</code> does not.</p>
  
  <p>Is there any workaround?</p>