[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/a646b... : SUCCESS in 4m 06s - periodic-ironic-python27-db-liberty http://logs.openstack.org/periodic-stable/periodic-ironic-python27-db-libert... : FAILURE in 3m 19s - periodic-ironic-docs-mitaka http://logs.openstack.org/periodic-stable/periodic-ironic-docs-mitaka/fcf083... : SUCCESS in 4m 48s - periodic-ironic-python27-db-mitaka http://logs.openstack.org/periodic-stable/periodic-ironic-python27-db-mitaka... : SUCCESS in 3m 39s