Suggest to add here "and then reboot the undercloud" https://access.redhat.com/documentation/en-us/red_hat_openstack_platform/13/html/director_installation_and_usage/installing-the-undercloud#annotations:febff9ec-d761-4e7a-99ec-1936924f806b
Nadav and I agree to go with the solution from BZ#1661812 *** This bug has been marked as a duplicate of bug 1661812 ***