test_unshelve_to_specific_host fails randomly at _shelve_offload_then_unshelve_to_host otherhost

[yatin]

test_unshelve_to_specific_host fails randomly at _shelve_offload_then_unshelve_to_host otherhost like:-
Traceback (most recent call last):
  File "/opt/stack/tempest/tempest/api/compute/admin/test_servers_on_multinodes.py", line 178, in test_unshelve_to_specific_host
    self.assertEqual(otherhost, self.get_host_for_server(server['id']))
  File "/opt/stack/tempest/.tox/tempest/lib/python3.10/site-packages/testtools/testcase.py", line 394, in assertEqual
    self.assertThat(observed, matcher, message)
  File "/opt/stack/tempest/.tox/tempest/lib/python3.10/site-packages/testtools/testcase.py", line 481, in assertThat
    raise mismatch_error
testtools.matchers._impl.MismatchError: 'np0035920758' != None

The operations seems to succeed on the destination host but still the check fails as server show don't have the expected host set.

Some failure builds:-
https://402b9b635a0653670c41-889023abcee881d48f07f1c8f07a15d7.ssl.cf1.rackcdn.com/901474/4/check/neutron-ovs-tempest-multinode-full/03ca936/testr_results.html
https://67fbdc27dc1cab269631-9795c6ee70a51795a4d498c996d13136.ssl.cf5.rackcdn.com/901478/2/gate/neutron-ovs-tempest-multinode-full/e661940/testr_results.html
https://storage.gra.cloud.ovh.net/v1/AUTH_dcaab5e32b234d56b626f72581e3644c/zuul_opendev_logs_59c/884711/9/check/neutron-ovs-tempest-dvr-ha-multinode-full/59c1ef4/testr_results.html
https://85bf7a1c249d0971baf7-33c96ff533edc27f55461123fdf39567.ssl.cf5.rackcdn.com/884407/9/check/neutron-ovs-tempest-multinode-full/07522b9/testr_results.html

Opensearch(creds: openstack/openstack):-
https://opensearch.logs.openstack.org/_dashboards/app/discover/?security_tenant=global#/?_g=(filters:!(),refreshInterval:(pause:!t,value:0),time:(from:now-30d,to:now))&_a=(columns:!(_source),filters:!(),index:'94869730-aea8-11ec-9e6a-83741af3fdcd',interval:auto,query:(language:kuery,query:'message:%22line%20178,%20in%20test_unshelve_to_specific_host%22'),sort:!())

[yatin (yatinkarel)]

still seeing it, recent ex from stable/2023.1 https://storage.bhs.cloud.ovh.net/v1/AUTH_dcaab5e32b234d56b626f72581e3644c/zuul_opendev_logs_4e8/893775/6/gate/neutron-ovs-tempest-multinode-full/4e87df5/testr_results.html

[yatin (yatinkarel)]

still seeing it, latest one https://8c9a0795d711e274b948-ad58f858969b72d3af1ce49234d68b4d.ssl.cf2.rackcdn.com/907382/5/gate/neutron-ovs-tempest-multinode-full/cf2f81a/testr_results.html

opensearch(creds openstack/openstack):- https://opensearch.logs.openstack.org/_dashboards/app/data-explorer/discover?security_tenant=global#?_a=(discover:(columns:!(_source),isDirty:!f,sort:!()),metadata:(indexPattern:'94869730-aea8-11ec-9e6a-83741af3fdcd',view:discover))&_g=(filters:!(),refreshInterval:(pause:!t,value:0),time:(from:now-30d,to:now))&_q=(filters:!(),query:(language:kuery,query:'message:%20%22in%20test_unshelve_to_specific_host%22'))