README: add ovirt/tested yum repo
README: add ovirt/tested yum repo

oVirt/ovirt-web-ui,mareklibra/userportal,mareklibra/userportal,mkrajnak/ovirt-web-ui,matobet/userportal,mkrajnak/ovirt-web-ui,mkrajnak/ovirt-web-ui,mareklibra/userportal,matobet/userportal,mkrajnak/ovirt-web-ui,oVirt/ovirt-web-ui,oVirt/ovirt-web-ui,mareklibra/userportal,matobet/userportal,matobet/userportal