Comment 2 for bug 1780404

Moving to Confirmed due to a long inactivity.

Steps to reproduce:
1. generate accounts.yaml file (use also --with-admin arg) - in my case in /home/centos/tempest/accounts_admin.yaml
2 edit the tempest.conf to use pre-provisioned credentials, in my case the [auth] section changed from:
[auth]
tempest_roles = _member_
admin_username = admin
admin_project_name = admin
admin_domain_name = Default
admin_password = c8bb8d400db14d56
admin_project_id = cb2f16b119bc482eb18b7b8cb33748e1

to:
tempest_roles = _member_
use_dynamic_credentials = False
test_accounts_file = /home/centos/tempest/accounts_admin.yaml
admin_project_id = cb2f16b119bc482eb18b7b8cb33748e1

3. Run the tempest.api.identity.admin.v3.test_list_users.UsersV3TestJSON tests

Unless I add the following lines back to tempest.conf the tests are failing with the mentioned error which is also weird because per use_dynamic_credentials == False it shouldn't use dynamic creds.
admin_username = admin
admin_project_name = admin
admin_password = c8bb8d400db14d56