[Openstack-stable-maint] Stable check of openstack/ironic failed

Build failed. - periodic-ironic-docs-liberty http://logs.openstack.org/periodic-stable/periodic-ironic-docs-liberty/e87b1... : SUCCESS in 4m 25s - periodic-ironic-python27-db-liberty http://logs.openstack.org/periodic-stable/periodic-ironic-python27-db-libert... : FAILURE in 4m 06s - periodic-ironic-docs-mitaka http://logs.openstack.org/periodic-stable/periodic-ironic-docs-mitaka/f264a1... : SUCCESS in 4m 42s - periodic-ironic-python27-db-mitaka http://logs.openstack.org/periodic-stable/periodic-ironic-python27-db-mitaka... : SUCCESS in 4m 40s