midokura/python-midonetclient — pull request #174 by tfukushima (2014-06-09 12:24:22+00:00)
Title: Change few attributes to be unset

This patch enables users to unset the following attributes

* Router's load-balancer
* VIP's persistence

I modified EnumAttr to allow None for the mapping value to make users
unsert VIP's persistence attribute.

Signed-off-by: Taku Fukushima