These patches are part of the engine backend - the failure happens WAY beforehand, they don't look related as far as I can tell.
Subsequent failures of the same suite seem to have different errors, e.g.:
Traceback (most recent call last):
File "/tmp/ovirt-y8uX2TlUiq/pythonlib/otopi/context.py", line 133, in _executeMethod
method['method']()
File "/tmp/ovirt-y8uX2TlUiq/otopi-plugins/otopi/packagers/yumpackager.py", line 256, in _packages
if self._miniyum.buildTransaction():
File "/tmp/ovirt-y8uX2TlUiq/pythonlib/otopi/miniyum.py", line 920, in buildTransaction
raise yum.Errors.YumBaseError(msg)
YumBaseError: [u'vdsm-4.20.3-202.git6826cec.el7.centos.x86_64 requires libvirt-daemon-kvm >= 3.2.0-14.el7_4.3', u'10:qemu-kvm-ev-2.9.0-16.el7_4.5.1.x86_64 requires ipxe-roms-qemu >= 20170123-1.git4e85b27.el7_4.1']
Has something changed in the way OST sets up repos/hosts?