Updated openstack/openstack
Project: openstack/python-keystoneclient  cf7e8afb2fe9477ec3d20ed57fc62658a4f64f63

Correcting using-api-v2.rst

Changes
* removed extraneous word from Introduction section

Closes-Bug: #1334915
Change-Id: I201ddb70a4d91e0d615e322abc43848993dee573