Added new params to configure vhost:

Example:
    class { 'ubuntu_lamp_tools::vhost':
      site_name   => 'sitename',
      server_name => 'server.local',
      server_alias => '/alias',
      server_document_root => '/var/www/aplication/web',
      directory_index => 'app.php',
    }
Delete patch
Merge pull request #1 from jesusjaen/master

Added Parameters in order to configure virtual host