Test failed: [ upgrade_engine ]

Link to suspected patches:
https://gerrit.ovirt.org/#/c/81205/9

Link to Job:
http://jenkins.ovirt.org/job/ovirt-master_change-queue-tester/2289/

Link to all logs:
http://jenkins.ovirt.org/job/ovirt-master_change-queue-tester/2289/artifact/exported-artifacts/upgrade-from-prevrelease-suit-master-el7/test_logs/upgrade-from-prevrelease-suite-master/post-001_upgrade_engine.py/lago_logs/lago.log

Error snippet from log:

<error>

engine-setup --config-append=/tmp/answer-file-post --accept-defaults
returned with 2
output:
 ***L:ERROR Internal error: type object 'DBEnvKeysConst' has no attribute 'NEED_DBMSUPGRADE'

</error>