Adopt oslo.versionedobjects

Export script: https://etherpad.openstack.org/p/4kwhUk5msi

Work items:
Create Launchpad project: DONE
Create Launchpad bug tracker: DONE
Create Launchpad blueprint tracker: DONE
Change owner of Launchpad project: DONE
Give openstackci Owner permissions on PyPI: DONE
Create Initial Repository: DONE
Fix the output of graduate.sh: DONE
Publish git repo - https://github.com/dhellmann/oslo.versionedobjects-import: DONE
Oslo team review new repository - http://lists.openstack.org/pipermail/openstack-dev/2015-February/thread.html#55838: DONE
openstack/governance reference/programs.yaml - https://review.openstack.org/151771: DONE
openstack-infra/project-config - gerrit/projects.yaml - https://review.openstack.org/151792: DONE
openstack-infra/project-config - gerrit/acls/openstack/project-name.config: DONE
openstack-infra/project-config - jenkins/jobs/projects.yaml: DONE
openstack-infra/project-config - zuul/layout.yaml: DONE
openstack-infra/project-config - gerritbot/channels.yaml: DONE
Update Gerrit Groups and ACLs: DONE
openstack-infra/devstack-gate - devstack-vm-gate-wrap.sh - https://review.openstack.org/162218: DONE
openstack/requirements projects.txt: DONE
Update list of libraries on Oslo wiki page: DONE
Make the library do something: DONE
Update the README.rst: DONE
Tag a release: DONE
Remove graduated code from nova: TODO
openstack/requirements - global-requirements.txt: DONE
Document Migration Process: TODO
openstack-dev/devstack - lib/oslo: DONE
openstack-dev/devstack - stackrc: DONE
Update project list on docs.openstack.org - https://review.openstack.org/162235: INPROGRESS