Hi!

I got the same issue using these instructions https://hub.docker.com/r/rallyforge/rally/ to setup a rally and then got the same trace 

2016-01-06 17:15:35.621 50 RALLYDEBUG rally.verification.tempest.config [-] Creating network resources: network, subnet, router
Command failed, please check log for more info
2016-01-06 17:15:35.623 50 CRITICAL rally [-] AttributeError: 'TempestResourcesContext' object has no attribute 'generate_random_name'
2016-01-06 17:15:35.623 50 ERROR rally Traceback (most recent call last):
2016-01-06 17:15:35.623 50 ERROR rally   File "/usr/local/bin/rally", line 10, in <module>
2016-01-06 17:15:35.623 50 ERROR rally     sys.exit(main())
2016-01-06 17:15:35.623 50 ERROR rally   File "/usr/local/lib/python2.7/dist-packages/rally/cli/main.py", line 42, in main
2016-01-06 17:15:35.623 50 ERROR rally     return cliutils.run(sys.argv, categories)
2016-01-06 17:15:35.623 50 ERROR rally   File "/usr/local/lib/python2.7/dist-packages/rally/cli/cliutils.py", line 554, in run
2016-01-06 17:15:35.623 50 ERROR rally     ret = fn(*fn_args, **fn_kwargs)
2016-01-06 17:15:35.623 50 ERROR rally   File "<decorator-gen-52>", line 2, in start
2016-01-06 17:15:35.623 50 ERROR rally   File "/usr/local/lib/python2.7/dist-packages/rally/cli/envutils.py", line 67, in default_from_global
2016-01-06 17:15:35.623 50 ERROR rally     return f(*args, **kwargs)
2016-01-06 17:15:35.623 50 ERROR rally   File "/usr/local/lib/python2.7/dist-packages/rally/cli/commands/verify.py", line 136, in start
2016-01-06 17:15:35.623 50 ERROR rally     system_wide=system_wide, concur=concur)
2016-01-06 17:15:35.623 50 ERROR rally   File "/usr/local/lib/python2.7/dist-packages/rally/api.py", line 398, in verify
2016-01-06 17:15:35.623 50 ERROR rally     expected_failures=expected_failures, concur=concur)
2016-01-06 17:15:35.623 50 ERROR rally   File "/usr/local/lib/python2.7/dist-packages/rally/verification/tempest/tempest.py", line 395, in verify
2016-01-06 17:15:35.623 50 ERROR rally     self._prepare_and_run(set_name, regex, tests_file, concur)
2016-01-06 17:15:35.623 50 ERROR rally   File "/usr/local/lib/python2.7/dist-packages/rally/common/logging.py", line 197, in wrapper
2016-01-06 17:15:35.623 50 ERROR rally     result = f(self, *args, **kwargs)
2016-01-06 17:15:35.623 50 ERROR rally   File "/usr/local/lib/python2.7/dist-packages/rally/verification/tempest/tempest.py", line 320, in _prepare_and_run
2016-01-06 17:15:35.623 50 ERROR rally     self.run(testr_args)
2016-01-06 17:15:35.623 50 ERROR rally   File "/usr/local/lib/python2.7/dist-packages/rally/verification/tempest/tempest.py", line 349, in run
2016-01-06 17:15:35.623 50 ERROR rally     with config.TempestResourcesContext(self.deployment, self.config_file):
2016-01-06 17:15:35.623 50 ERROR rally   File "/usr/local/lib/python2.7/dist-packages/rally/verification/tempest/config.py", line 331, in __enter__
2016-01-06 17:15:35.623 50 ERROR rally     self._create_network_resources)
2016-01-06 17:15:35.623 50 ERROR rally   File "/usr/local/lib/python2.7/dist-packages/rally/verification/tempest/config.py", line 371, in _configure_option
2016-01-06 17:15:35.623 50 ERROR rally     resource = create_method(*args, **kwargs)
2016-01-06 17:15:35.623 50 ERROR rally   File "/usr/local/lib/python2.7/dist-packages/rally/verification/tempest/config.py", line 417, in _create_network_resources
2016-01-06 17:15:35.623 50 ERROR rally     add_router=True, network_create_args={"shared": True})
2016-01-06 17:15:35.623 50 ERROR rally   File "/usr/local/lib/python2.7/dist-packages/rally/plugins/openstack/wrappers/network.py", line 316, in create_network
2016-01-06 17:15:35.623 50 ERROR rally     "name": self.owner.generate_random_name()})
2016-01-06 17:15:35.623 50 ERROR rally AttributeError: 'TempestResourcesContext' object has no attribute 'generate_random_name'
2016-01-06 17:15:35.623 50 ERROR rally