AUTHORS/CHANGELOG uploades for the next release

also bumped the dev version to 1.8.0 to reflect the
current dev target

Change-Id: Ib05cb4f0616c0d297ce5cd7073af766c7a4300d9
version bump for 1.8.1

first commit for openstack havana

Change-Id: If9fe0fb73c676d5f6d1ed53ccfa300faa0aad8db
Merge remote branch 'upstream/master'