Liberty, Neutron, no networks configured (not sure why), 
 tempest_config fails:
 2015-08-16 17:11:22.557 86196 INFO __main__ [-] No network supplied, 
 trying auto discover for network
 2015-08-16 17:11:22.648 86196 INFO tempest_lib.common.rest_client 
 [req-377d6922-c260-4252-ae86-edd1f8595b82 ] Request (main): 200 GET 
 
http://10.102.42.90:9696/v2.0/networks 0.090s
 2015-08-16 17:11:22.649 86196 ERROR __main__ [-] No external networks 
 found. Please note that any test that relies on external connectivity 
 would most likely fail.
 2015-08-16 17:11:22.649 86196 CRITICAL tempest [-] TypeError: option 
 values must be strings
 2015-08-16 17:11:22.649 86196 ERROR tempest Traceback (most recent 
 call last):
 2015-08-16 17:11:22.649 86196 ERROR tempest   File 
 "tools/config_tempest.py", line 729, in <module>
 2015-08-16 17:11:22.649 86196 ERROR tempest     main()
 2015-08-16 17:11:22.649 86196 ERROR tempest   File 
 "tools/config_tempest.py", line 150, in main
 2015-08-16 17:11:22.649 86196 ERROR tempest     
 create_tempest_networks(clients, conf, has_neutron, args.network_id)
 2015-08-16 17:11:22.649 86196 ERROR tempest   File 
 "tools/config_tempest.py", line 596, in create_tempest_networks
 2015-08-16 17:11:22.649 86196 ERROR tempest     conf.set('network', 
 'public_network_id', public_network_id)
 2015-08-16 17:11:22.649 86196 ERROR tempest   File 
 "tools/config_tempest.py", line 361, in set
 2015-08-16 17:11:22.649 86196 ERROR tempest     
 ConfigParser.SafeConfigParser.set(self, section, key, value)
 2015-08-16 17:11:22.649 86196 ERROR tempest   File 
 "/usr/lib64/python2.7/ConfigParser.py", line 743, in set
 2015-08-16 17:11:22.649 86196 ERROR tempest     raise 
 TypeError("option values must be strings")
 2015-08-16 17:11:22.649 86196 ERROR tempest TypeError: option values 
 must be strings
 2015-08-16 17:11:22.649 86196 ERROR tempest
 Based on 7cbe2414f07c0d5fbf29d7914c430700f2f1f154 .
 As I'm testing Cinder, I can really run quite well without networks 
 whatsoever.
 As to why I don't have any network defined, that's another question. 
 Working on it.
 Y.
 
The design of the config script did not consider a case where some of 
the core services (compute,network,volume,identity,image) were not 
deployed in a realistic way.
  -David