Due to missing 'project_id' field in the response generated by the AutoAllocatedTopologyMixin.get_auto_allocated_topology method when 'dry-run' is called, response send to the user is 404 as it don't pass policy enforcement.
We need to add both 'project_id' and 'tenant_id' fields there.
There is no problem with that when admin user runs this validation from the API. We found it by running test tempest.api.compute.admin.test_auto_allocate_network.AutoAllocateNetworkTest.test_server_multi_create_auto_allocate is passing in our downstream CI job where this test was failing for us always.
In u/s ci jobs which are using enforcing of new defaults (neutron_tempest_plugin) jobs we don't run this test and that's why we did not catch it there.
In jobs like tempest-integrated-networking we skip this test because there is shared network found and apparently this is reason to skip it there too.
We can cover this by adding simple api test in the neutron_tempest_plugin.api tests to just call
curl -g -i -X GET http://10.120.0.40:9696/networking/v2.0/auto-allocated-topology/57bea41fe8f34eee8ba1cc26359fc08a?fields=dry-run -H "User-Agent: openstacksdk/3.1.0 keystoneauth1/5.6.0 python-requests/2.31.0 CPython/3.10.12" -H "X-Auth-Token: {SHA256}5a03508585ca03c6f127d8e052f2680778255e743345c660b9128929e22494c3"
Fix proposed to branch: master
Review: https:/