magg@cloud1:~$ keystone-manage tenant add "MyTenant"
ERROR: Unable to locate any configuration file. Cannot load application admin
ERROR:root:Unable to locate any configuration file. Cannot load application admin
Traceback (most recent call last):
  File "/usr/bin/keystone-manage", line 16, in <module>
    keystone.manage.main()
  File "/usr/lib/python2.7/dist-packages/keystone/manage/__init__.py", line 249, in main
    raise exc
RuntimeError: Unable to locate any configuration file. Cannot load application admin