[neutron] 500 error for stack actions

[Dmitry Belyaninov]

Detailed bug description:
There are failed tests:
https://product-ci.infra.mirantis.net/job/9.x.acceptance.ubuntu.failover_group_1/24/testReport/(root)/power_outage_cinder_cluster/power_outage_cinder_cluster/

https://product-ci.infra.mirantis.net/job/9.x.acceptance.ubuntu.failover_group_mongo/24/testReport/(root)/deploy_mongo_cluster/deploy_mongo_cluster/

https://product-ci.infra.mirantis.net/job/9.x.acceptance.ubuntu.murano_os_component/24/testReport/(root)/murano_neutron_vlan/murano_neutron_vlan/

https://product-ci.infra.mirantis.net/job/9.x.system_test.ubuntu.network_templates/137/testReport/(root)/deploy_cluster_without_management_net/deploy_cluster_without_management_net/

Steps to reproduce:
Run any test
Expected results:
pass
Actual result:
fail
Reproducibility:
yes

for power_outage_cinder_cluster test:
ostf log:
http://paste.openstack.org/show/590646/
neutron log:
http://paste.openstack.org/show/590654/

[Oleksiy Molchanov (omolchanov)]

It seems that this should be fixed by https://review.openstack.org/#/c/402699/

[Eugene Nikanorov (enikanorov)]

Looking at neutron-server log I don't see how it could be fixed by the proposed change.
Can you give more context or attach neutron-server logs?

[Dmitry Pyzhov (dpyzhov)]

Fix has been merged, please reopen the issue if it appears again.

[Oleksiy Molchanov (omolchanov)]

@Eugene, here we are investigating stack-related bug, as written in title. If neutron issue is valid, please open new bug.

[Dmitry Belyaninov (dbelyaninov)]

Not reproduced