Add release notes for 1.1.1

Will be released from stable/grizzly soon. Pushing the release notes
to master so they appear here:

  http://docs.openstack.org/developer/oslo.config/

Change-Id: Ib4389718ee83b997c8b6c8a77dbf82fb0fd98cf3
Add release notes for 1.2.0a2

These will appear here:

  http://docs.openstack.org/developer/oslo.config/

Change-Id: I9141f34f9ed7d10ae7cdf49ece2226f494055645