To get www2 to stick for an apache server config w/o any other mods, and for testing, I added as a server alias to the httpd.conf file, then ran /usr/local/cpanel/bin/apache_conf_distiller --update, then /usr/local/cpanel/bin/build_apache_conf
/usr/local/cpanel/bin/apache_conf_distiller --update
/usr/local/cpanel/bin/build_apache_conf