[JIRA] (OVIRT-822) prepare to remove fc23 and add fc25 to CI

prepare to remove fc23 and add fc25 to CI ----------------------------------------- Key: OVIRT-822 URL: https://ovirt-jira.atlassian.net/browse/OVIRT-822 Project: oVirt - virtualization made easy Issue Type: Task Reporter: eyal edri [Administrator] Assignee: infra Priority: High We might want to consider moving some of the configuration to use centos, to avoid such a massive infra update every 6 months.