Updated openstack/openstack
Project: openstack/keystone  724d05685147e2b51788bbc70fcacdcdab90f624
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Open Juno development

Bump preversion to 2014.2 to formally open Juno development.
The Icehouse release branch (milestone-proposed) will be cut
from the last commit before this one.

Change-Id: I16d88d311795868b83cd13afc87dc8fbff01bfb6