EndpointNotFound: Endpoint not found

after updating my devstack environment to the state of the art (wih the latest checkout of devstack) i were not able to run tempest against it (also using the latest checkout).

the devstack environment seems to work, keystone is also working. so i think it's a problem with tempest itself.

devstack: a6651e94001a2f024902c3dc772a8be9a3218118
tempest: 4aa82a9c21ab9a3057ec9806cf8e892159c84e75
nova: 34d77ac8b1919a287865a4bef376579b6bf09b48
keystone: 90068b0143af788869116d08533d5ebc99874a17

stack@devstack001:~/devstack$ keystone --username admin --password testing service-list
+----------------------------------+----------+----------+---------------------------+
| id | name | type | description |
+----------------------------------+----------+----------+---------------------------+
| 2abe1de13127417ab2cbf4476763ef1c | glance | image | Glance Image Service |
| 63788dbd6c684eae8a852b822017bbc3 | keystone | identity | Keystone Identity Service |
| 81025434e8d545e293e710e5ed4879cc | nova | compute | Nova Compute Service |
| ddb7d116c12b455382891df983ac8540 | ec2 | ec2 | EC2 Compatibility Layer |
+----------------------------------+----------+----------+---------------------------+

======================================================================
ERROR: test suite for <class 'tempest.tests.test_keypairs.KeyPairsTest'>
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/nose/suite.py", line 208, in run
    self.setUp()
  File "/usr/lib/python2.7/site-packages/nose/suite.py", line 291, in setUp
    self.setupContext(ancestor)
  File "/usr/lib/python2.7/site-packages/nose/suite.py", line 314, in setupContext
    try_run(context, names)
  File "/usr/lib/python2.7/site-packages/nose/util.py", line 478, in try_run
    return func()
  File "/home/berendt/Documents/repositories/tempest/tempest/tests/test_keypairs.py", line 11, in setUpClass
    cls.os = openstack.Manager()
  File "/home/berendt/Documents/repositories/tempest/tempest/openstack.py", line 28, in __init__
    self.config.nova.tenant_name)
  File "/home/berendt/Documents/repositories/tempest/tempest/services/nova/json/servers_client.py", line 14, in __init__
    tenant_name)
  File "/home/berendt/Documents/repositories/tempest/tempest/common/rest_client.py", line 19, in __init__
    tenant_name)
  File "/home/berendt/Documents/repositories/tempest/tempest/common/rest_client.py", line 81, in keystone_v2_auth
    raise exceptions.EndpointNotFound(service)
EndpointNotFound: Endpoint not found
Details: nova

this is my etc/tempest.conf:

[nova]
host=192.168.23.220
port=5000
apiVer=v2.0
path=tokens
user=admin
api_key=testing
tenant_name=admin
ssh_timeout=300
build_interval=10
build_timeout=600
catalog_name=nova

[environment]
image_ref=3
image_ref_alt=4
flavor_ref=1
flavor_ref_alt=2
create_image_enabled=true
resize_available=true
authentication=keystone_v2