Link to suspected patches:
https://gerrit.ovirt.org/#/c/92694/

Link to the job:
https://rhv-devops-jenkins.rhev-ci-vms.eng.rdu2.redhat.com/job/rhv-master_change-queue-tester/50/

Link to all logs:
https://rhv-devops-jenkins.rhev-ci-vms.eng.rdu2.redhat.com/job/rhv-master_change-queue-tester/50/

(Relevant) error snippet from the log:

<error>
2018-07-07 09:47:23,755-04 WARN  [org.ovirt.engine.core.bll.AddVmFromScratchCommand] (default task-23) [] Validation of action 'AddVmFromScratch' failed for user admin@internal-authz. Reasons: VAR__ACTION__ADD,VAR__TYPE__VM,ACTION_TYPE_FAILED_NAME_ALREADY_USED
2018-07-07 09:47:23,756-04 INFO  [org.ovirt.engine.core.bll.AddVmFromScratchCommand] (default task-23) [] Lock freed to object 'EngineLock:{exclusiveLocks='[vm0=VM_NAME]', sharedLocks=''}'
2018-07-07 09:47:23,774-04 DEBUG [org.ovirt.engine.core.common.di.interceptor.DebugLoggingInterceptor] (default task-23) [] method: runAction, params: [AddVmFromScratch, AddVmParameters:{commandId='720f8857-26e1-4ce2-8afd-6297372a27e9', user='null', commandType='Unknown', vmId='a8064ee0-dc9f-47cc-b211-29d2e8b14873'}], timeElapsed: 121ms
2018-07-07 09:47:23,781-04 ERROR [org.ovirt.engine.api.restapi.resource.AbstractBackendResource] (default task-23) [] Operation Failed: [Cannot add VM. The VM name is already in use, please choose a unique name and try again.]
</error>