Updated config fields from rackspace
Updated config fields from rackspace

The Openstack driver has been updated to change config fields
from Rackspace to Openstack.  The change will be important
moving forward but didn't impact the existing driver.

cduchesne/rexray,thecodeteam/rexray,clintonskitson/rexray,ltouati/rexray,emccode/rexray,codedellemc/rexray,akutz/rexray,akutz/rexray,oppodeldoc/rexray,thecodeteam/rexray,thecodeteam/rexray,clintonskitson/rexray,clintonskitson/rexray,ltouati/rexray,oppodeldoc/rexray,ltouati/rexray,thecodeteam/rexray,codedellemc/rexray,emccode/rexray,cduchesne/rexray,codedellemc/rexray,thecodeteam/rexray,ltouati/rexray,codedellemc/rexray,akutz/rexray,cduchesne/rexray,emccode/rexray,oppodeldoc/rexray,cduchesne/rexray,cduchesne/rexray,codedellemc/rexray,codedellemc/rexray,oppodeldoc/rexray,akutz/rexray,oppodeldoc/rexray,emccode/rexray,clintonskitson/rexray,cduchesne/rexray,akutz/rexray,akutz/rexray,oppodeldoc/rexray,thecodeteam/rexray