Eli, can you please check if any fix is needed for upgrade?

Link and headline of suspected patches:

https://gerrit.ovirt.org/#/c/95190/ - engine: Remove Cluster Levels 3.6 and 4.0

Link to Job:

https://jenkins.ovirt.org/job/ovirt-master_change-queue-tester/10975

Link to all logs:

https://jenkins.ovirt.org/job/ovirt-master_change-queue-tester/10975/artifact/upgrade-from-release-suite.el7.x86_64/test_logs/upgrade-from-release-suite-master/post-002_bootstrap.py/

(Relevant) error snippet from the log:

<error>

2018-11-04 06:26:54,619-05 INFO  [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (default task-1) [1d8362d9] EVENT_ID: USER_VDC_LOGIN(30), User admin@internal-authz connecting from '192.168.201.1' using session 'v2y73+8hVB7ccwgjlAQOAK539eW6UsAysQQHbbiSy+mGDSTjOyZ38bpl9XLrGXSLJAqKyeXSdqfrbAqB4qWZUA==' logged in.
2018-11-04 06:26:54,873-05 WARN  [org.ovirt.engine.core.bll.storage.pool.AddEmptyStoragePoolCommand] (default task-1) [4b627395-5dd6-4211-a63e-d78f3728ec6f] Validation of action 'AddEmptyStoragePool' failed for user admin@internal-authz. Reasons: VAR__TYPE__STORAGE__POOL,VAR__ACTION__CREATE,ACTION_TYPE_FAILED_GIVEN_VERSION_NOT_SUPPORTED
2018-11-04 06:26:54,877-05 ERROR [org.ovirt.engine.api.restapi.resource.AbstractBackendResource] (default task-1) [] Operation Failed: [Cannot create Data Center. Selected Compatibility Version is not supported.

</error>