Description of problem:
 Neutron test_trunk_subport_lifecycle failure on OVN setup

        Body: None
    Response - Headers: {'status': '200', u'content-length': '1560', 'content-location': 'http://10.0.0.102:8774/v2.1/servers/ded7e586-addf-4d41-971e-03c0de078e7b', u'x-compute-request-id': 'req-6d709d63-0456-451e-a474-c161d70bfd81', u'vary': 'OpenStack-API-Version,X-OpenStack-Nova-API-Version,Accept-Encoding', u'server': 'Apache', u'openstack-api-version': 'compute 2.1', u'connection': 'close', u'x-openstack-nova-api-version': '2.1', u'date': 'Sat, 31 Mar 2018 15:35:10 GMT', u'content-type': 'application/json', u'x-openstack-request-id': 'req-6d709d63-0456-451e-a474-c161d70bfd81'}
        Body: {"server": {"OS-EXT-STS:task_state": "deleting", "addresses": {"tempest-test-network--1787378211": [{"OS-EXT-IPS-MAC:mac_addr": "fa:16:3e:88:c1:6a", "version": 4, "addr": "10.100.0.14", "OS-EXT-IPS:type": "fixed"}, {"OS-EXT-IPS-MAC:mac_addr": "fa:16:3e:88:c1:6a", "version": 4, "addr": "10.0.0.215", "OS-EXT-IPS:type": "floating"}]}, "links": [{"href": "http://10.0.0.102:8774/v2.1/servers/ded7e586-addf-4d41-971e-03c0de078e7b", "rel": "self"}, {"href": "http://10.0.0.102:8774/servers/ded7e586-addf-4d41-971e-03c0de078e7b", "rel": "bookmark"}], "image": {"id": "93ef2b63-3732-46d1-8e2d-49bc879e8c12", "links": [{"href": "http://10.0.0.102:8774/images/93ef2b63-3732-46d1-8e2d-49bc879e8c12", "rel": "bookmark"}]}, "OS-EXT-STS:vm_state": "active", "OS-SRV-USG:launched_at": "2018-03-31T15:30:42.000000", "flavor": {"id": "200", "links": [{"href": "http://10.0.0.102:8774/flavors/200", "rel": "bookmark"}]}, "id": "ded7e586-addf-4d41-971e-03c0de078e7b", "user_id": "6fa067de11754d93aa74199a8668287a", "OS-DCF:diskConfig": "MANUAL", "accessIPv4": "", "accessIPv6": "", "progress": 0, "OS-EXT-STS:power_state": 1, "OS-EXT-AZ:availability_zone": "nova", "config_drive": "", "status": "ACTIVE", "updated": "2018-03-31T15:35:10Z", "hostId": "c8cc696576e5b2b82fd415cca9ce66da0d111a0299a2bd95dc46b099", "OS-SRV-USG:terminated_at": null, "key_name": "tempest-keypair-test-1172149803", "name": "tempest-server-test-1773727956", "created": "2018-03-31T15:30:28Z", "tenant_id": "54c431fbb7484f7ba539430f7e0405e0", "os-extended-volumes:volumes_attached": [], "metadata": {}}}
2018-03-31 11:35:11,891 31887 INFO     [tempest.lib.common.rest_client] Request (TrunkTest:_run_cleanups): 404 GET http://10.0.0.102:8774/v2.1/servers/ded7e586-addf-4d41-971e-03c0de078e7b 0.120s
2018-03-31 11:35:11,891 31887 DEBUG    [tempest.lib.common.rest_client] Request - Headers: {'Content-Type': 'application/json', 'Accept': 'application/json', 'X-Auth-Token': '<omitted>'}
        Body: None
    Response - Headers: {'status': '404', u'content-length': '111', 'content-location': 'http://10.0.0.102:8774/v2.1/servers/ded7e586-addf-4d41-971e-03c0de078e7b', u'x-compute-request-id': 'req-5c3be544-77bc-4949-b563-e89cc88c42fe', u'vary': 'OpenStack-API-Version,X-OpenStack-Nova-API-Version', u'server': 'Apache', u'openstack-api-version': 'compute 2.1', u'connection': 'close', u'x-openstack-nova-api-version': '2.1', u'date': 'Sat, 31 Mar 2018 15:35:11 GMT', u'content-type': 'application/json; charset=UTF-8', u'x-openstack-request-id': 'req-5c3be544-77bc-4949-b563-e89cc88c42fe'}
        Body: {"itemNotFound": {"message": "Instance ded7e586-addf-4d41-971e-03c0de078e7b could not be found.", "code": 404}}
}}}

Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/neutron_tempest_plugin/scenario/test_trunk.py", line 219, in test_trunk_subport_lifecycle
    "transition to ACTIVE." % s['port_id']))
  File "/usr/lib/python2.7/site-packages/neutron_tempest_plugin/common/utils.py", line 72, in wait_until_true
    raise exception
RuntimeError: Timed out waiting for subport 0bb6993a-f28c-4d93-9575-72731302bcdf to transition to ACTIVE.
Version-Release number of selected component (if applicable):
OSP13 ha ovn p 29_3_18

How reproducible:
always

Steps to Reproduce:
1. deploy OSP13 ovn HA  and ru hte test
2.
3.

Actual results:


Expected results:


Additional info: