[CQ]: 7aa8be7 (ovirt-ansible-cluster-upgrade) failed "ovirt-4.2" system tests

Change 7aa8be7 (ovirt-ansible-cluster-upgrade) is probably the reason behind recent system test failures in the "ovirt-4.2" change queue and needs to be fixed. This change had been removed from the testing queue. Artifacts build from this change will not be released until it is fixed. For further details about the change see: https://github.com/oVirt/ovirt-ansible-cluster-upgrade/commit/7aa8be7a74f... For failed test results see: http://jenkins.ovirt.org/job/ovirt-4.2_change-queue-tester/4784/