Updated openstack/openstack
Project: openstack/keystone  1335d6684d46017343a6657e2768aa2f0dbd808b

Open Kilo development

Bump pre-version to 2015.1 to formally open master branch to Kilo
development.

Change-Id: I75e3285cfbdf64f6b15c506d14265c66a266c2f3