I have a solution but i do not know if it is appropriate as it is a hack. You should open a bug to find a better solution .
the hack consists :
make an entry in your dns record of your router or dns server to point the domain toto.com to the ip of your server
add in the wordpress template
nano /etc/e-smith/templates/etc/httpd/conf/httpd.conf/92wordpress
$OUT .= "Alias /wordpress /usr/share/wordpress\n";
######add-this-to-the-template
$OUT .= "<VirtualHost 0.0.0.0:80>\n";
$OUT .= " ServerName toto.com\n";
$OUT .= " DocumentRoot /usr/share/wordpress\n";
$OUT .= "</VirtualHost>\n";
######End
$OUT .= "\n";
then issue this CL
expand-template /etc/httpd/conf/httpd.conf
But it is a quick and bad hack as the domain toto.com will never appear in the server-manager and the day when you will set the same name of domain, you will have some troubles. In the same way when the rpm will be updated you will have some problem, except if you do your own fragment of template