[JIRA] (OVIRT-2438) upgrade jenkins.ovirt.org to 2.121.3 LTS

upgrade jenkins.ovirt.org to 2.121.3 LTS ---------------------------------------- Key: OVIRT-2438 URL: https://ovirt-jira.atlassian.net/browse/OVIRT-2438 Project: oVirt - virtualization made easy Issue Type: Task Reporter: Evgheni Dereveanchin Assignee: Evgheni Dereveanchin A new LTS release is scheduled for today fixing security issues. This is the tracker issue for the upgrade which will also include plugin security fixes