Comment 7 for bug 1866204

Okay, I think this all actually boils down to EL 8 not supported the legacy eth* interface naming. We can see from here that the ens3 device is trying to be brought up but for some strange reason it complains about eth0.

http://paste.openstack.org/show/790356/
https://logserver.rdoproject.org/66/25666/7/check/periodic-tripleo-ci-centos-8-ovb-3ctlr_1comp-featureset001-master/4fc1241/logs/overcloud-controller-0/var/log/journal.txt.gz
https://logserver.rdoproject.org/66/25666/7/check/periodic-tripleo-ci-centos-8-ovb-3ctlr_1comp-featureset001-master/4fc1241/logs/overcloud-controller-0/etc/sysconfig/network-scripts/