Open stable/havana

Change-Id: I209252af91b42691ac301f606dbf6d6a957928b8
Limit WSME to working version

WSME >= 0.5b6 breaks Ceilometer as it has been released in Havana. So
let's keep WSME with a correct version range.

Fixes-Bug: #1240741

Change-Id: Iac8dfa6a7f5506423f467a96ed9ad0c70cbb35c5
Merge "Open stable/havana" into stable/havana