rackspace: pass full path to the isdir.

lib/ansible/modules/cloud/rackspace/rax_files_objects.py

@@ -271,7 +271,7 @@ def upload(module, cf, container, src, dest, meta, expires):
                 if path != src:
                     prefix = path.split(src)[-1].lstrip('/')
                 filenames = [os.path.join(prefix, name) for name in filenames
-                             if not os.path.isdir(name)]
+                             if not os.path.isdir(os.path.join(path, name))]
                 objs += filenames
 
             _objs = []