fixes #8735 - enable config drive on Rackspace servers
(cherry picked from commit 9f19765b1c81d7a96381e40f46e5e4c2b00f413c)
fixes #8735 - enable config drive on Rackspace servers
(cherry picked from commit 9f19765b1c81d7a96381e40f46e5e4c2b00f413c)