Fixed bug where a host entry in the inventory represented as a dict w/o a hosts or vars key was treated as a group and its vars essentially ignored.

lib/ansible/inventory/script.py

@@ -63,6 +63,8 @@ class InventoryScript(object):
 
             if not isinstance(data, dict):
                 data = {'hosts': data}
+            elif not any(k in data for k in ('hosts','vars')):
+                data = {'hosts': [group_name], 'vars': data}
 
             if 'hosts' in data: