Description of enhancement: Add prep validation for RHEL version >= 7.5 Version-Release number of selected component (if applicable): 13-z Additional info: https://access.redhat.com/documentation/en-us/red_hat_openstack_platform/13/html-single/director_installation_and_usage/index#sect-Undercloud_Requirements lists:"Red Hat Enterprise Linux 7.5 or later installed as the host operating system."
*** This bug has been marked as a duplicate of bug 1248691 ***