The oVirt Team has just released a new version of ovirt-engine package

(4.5.2.5) that fixes an important bug:

- Bug 2122174 <https://bugzilla.redhat.com/2122174> - engine-setup on separate DWH machine fails: Failed to execute stage 'Closing up': 'NoneType' object has no attribute 'open_sftp_client'

The update is already available on resources.ovirt.org and should land on

oVirt mirrors within 24 hours.