Rally work incorrectly in multi-region environment when it was working longer than expiration time for keystone token

Looks like Rally don't pass region_name to nova client, and it results in following error after original token expiration:
GetResourceFailure: Failed to get the resource <Server: s_rally_4858a1ea_HRQBUp5o>: AmbiguousEndpoints: [{u'adminURL': u'<redacted>', u'region': <redacted>', u'id': u'<redacted>', 'serviceName': u'nova', u'internalURL': u'<redacted>', u'publicURL': u'<redacted>'}, {u'adminURL': u'<redacted>', u'region': u'<redacted>', u'id': u'<redacted>', 'serviceName': u'nova', u'internalURL': u'<redacted>', u'publicURL': u'<redacted>'}, {u'adminURL': u'<redacted>', u'region': u'<redacted>', u'id': u'<redacted>', 'serviceName': u'nova', u'internalURL': u'<redacted>', u'publicURL': u'<redacted>'}]