Improved container-sync resiliency

container-sync now skips faulty objects in the first and second rounds.
All replicas try in the second round.
No server will give up until the faulty object suceeds

Fixes: bug #1068423

Change-Id: I0defc174b2ce3796a6acf410a2d2eae138e8193d
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 "Improved container-sync resiliency"