Remove a TODO item
Remove a TODO item

The node membership is always updated today when it has been changed.
This patch removes a TODO item related to this.

Change-Id: Ie0b48a0e5edd1d6adb5a42cd86ac25b6657481b1

openstack/senlin,stackforge/senlin,tengqm/senlin-container,tengqm/senlin-container,openstack/senlin,openstack/senlin,stackforge/senlin