webui:tests: realm domain add with DNS check
Try adding and deleting with "Check DNS" (in html 'ok' button)
DNS check expects that the added domain will have DNS record:
TXT _kerberos.$domain "$REALM"
When a new domain is added using dnszone-add it automatically adds
this TXT record and adds a realm domain. So in order to test without
external DNS we must get into state where realm domain is not added
(in order to add it) but DNS domain with the TXT record exists.
https://pagure.io/freeipa/issue/7481
Reviewed-By: Petr Cech <pcech@redhat.com>
Reviewed-By: Petr Cech <pcech@redhat.com>