Description of problem: Machine config operator was failing on Centos 7 nodes,because it was using a journal flag not supported for CentOS 7. There was a check for that flag, but only for RHEL, and not CentOS. I added the check on https://github.com/openshift/machine-config-operator/pull/1111/files, but that landed on 4.3-master I'd like to backport that to 4.2 to be able to use Centos(realtime) on upstream projects.
before noticing that this BZ doesn't have a 4.1.z BZ - this backport has been requested by Yolanda _only_ for 4.2 so not sure if we'll stick to that process where we have BZ for versions not even affected by this.
@Yolanda Will you be doing the backport for this? Your original PR merged.