This changes the default value for keymgr_backend to the service default from the invalid value [1] that is used now. Since Stein and after stevedore fails to load that class [2]. [1] cinder.keymgr.conf_key_mgr.ConfKeyManager [2] http://paste.openstack.org/show/782285/ Change-Id: I67ddc2e5a090c99ef2fad64348fcec705b773afa