Updated openstack/openstack
Project: openstack/cinder  23e7f9e0c4b191db7407d3da3a0b481358ea876e

Scality driver:use self.configuration instead of CONF

In order for the Filter scheduler to be used to it's full advantage
Cinder drivers need to move away from using FLAGS directly and switch
to appending their specific options to self.configuration.

This patch converts the driver and updates tests.

Commit message stolen from Id1a7c583894ac368bdcc61facc6f72300db320c7
Closes-Bug: #1392633
Change-Id: I61b0b6a21628d5629b5f80768e73ee44db05d1ce