Automatically install required vagrant plugins from within a vagrant script, as opposed to requiring users first install the needed plugins first. Not sure if this will cause any other issues but it does streamline the entire vagrant process.

vagrant-auto-plugins

required_plugins = %w( vagrant-hostsupdater vagrant-vbguest )

_retry = false
required_plugins.each do |plugin|
  unless Vagrant.has_plugin? plugin
    system "vagrant plugin install #{plugin}" 
    _retry = true
  end
end

if (_retry)
  exec "vagrant " + ARGV.join(' ')
end