Activate gilab pages on our gitlab instalation

zda se, ze s gitlabem od 17.4 by jsme meli byt schopni vyzkouset gitlab pages bez dns wildcard zaznamu. viz. https://docs.gitlab.com/ee/administration/pages/#pages-domain-without-wildcard-dns

odkaz mezitim uz neni, snad zde: https://docs.gitlab.com/ee/administration/pages/#dns-configuration-for-single-domain-sites