Updated openstack/openstack
Project: openstack/tempest  726c7bd184cdc421037b306cd6cb0ce00ef55628

Fix "mutable" object as default value

This patch fix the coding issue where "mutable" objects like list, dict
are being used as default value of param.

Current functions with mutable object as default value can create issues
if they will be called in more random order.
For example - first call with non default value and then with default
value. In this case original default will be overridden by the first
function call (as mutable object keep their state among function calls).

This commit also add the hacking check for the same and its
corresponding test.

Closes-Bug: #1330322

Change-Id: I251b316ef6d37f4b95c5e8d73a20a39005c22870