move rackspace sdk

git-svn-id: https://plugins.svn.wordpress.org/updraftplus/trunk@834897 b8457f37-d9ea-0310-8a92-e5e31aec5664
move rackspace sdk

git-svn-id: https://plugins.svn.wordpress.org/updraftplus/trunk@834898 b8457f37-d9ea-0310-8a92-e5e31aec5664
1.8.5 stable

git-svn-id: https://plugins.svn.wordpress.org/updraftplus/trunk@834911 b8457f37-d9ea-0310-8a92-e5e31aec5664