we are failing hc master basic suite on test: 002_bootstrap.add_hosts

Link and headline of suspected patches:

Link to Job:

http://jenkins.ovirt.org/job/ovirt-system-tests_hc-basic-suite-master/163/

Link to all logs:

http://jenkins.ovirt.org/job/ovirt-system-tests_hc-basic-suite-master/163/artifact/

(Relevant) error snippet from the log:

<error>

2018-01-18 22:30:56,141-05 ERROR [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (VdsDeploy) [3e58f8ce] EVENT_ID: VDS_INSTALL_IN_PROGRESS_ERROR(511), An error has occurred during installation of Host lago_basic_suite_hc_host0: Failed to execute stage 'Closing up': 'Plugin' object has no attribute 'exist'

</error>