```
Provider constant RACKSPACE_NOVA_DFW has been removed. New constant is now called RACKSPACE.
For more information on this change and how to modify your code to work with it, please visit: http://s.apache.org/lc0140un
Traceback (most recent call last):
  File "/home/vampas/projects/salt/salt/salt/cloud/__init__.py", line 1648, in run_parallel_map_providers_query
    cloud.clouds[data['fun']]()
  File "/home/vampas/projects/salt/salt/salt/cloud/libcloudfuncs.py", line 354, in list_nodes
    conn = get_conn()   # pylint: disable-msg=E0602
  File "/home/vampas/projects/salt/salt/salt/cloud/clouds/rackspace.py", line 138, in get_conn
    driver = get_driver(getattr(Provider, computed_provider))
  File "/home/vampas/projects/.virtualenvs/Py27/lib/python2.7/site-packages/libcloud/compute/providers.py", line 155, in get_driver
    raise Exception(msg)
Exception: Provider constant RACKSPACE_NOVA_DFW has been removed. New constant is now called RACKSPACE.
For more information on this change and how to modify your code to work with it, please visit: http://s.apache.org/lc0140un
```