Fix for type error introduced by #51034 (#54333)

* Fix for type error

The empty type here should be a dict, not a list as is has a `get` done
on it next.

* Return dict directly to avoid failing key lookup

lib/ansible/plugins/inventory/foreman.py

@@ -175,7 +175,7 @@ class InventoryModule(BaseInventoryPlugin, Cacheable):
         url = "%s/api/v2/hosts/%s" % (self.foreman_url, hid)
         ret = self._get_json(url, [404])
         if not ret or not isinstance(ret, MutableMapping) or not ret.get('all_parameters', False):
-            ret = []
+            return {}
         return ret.get('all_parameters')
 
     def _get_facts_by_id(self, hid):