This bug was fixed in the package oslo.messaging -
1.8.3-0ubuntu0.15.04.1
---
oslo.messaging (1.8.3-0ubuntu0.15.04.1) vivid; urgency=medium
* New upstream point release (LP: #1467959):
- RabbitMQ driver:
+ Adding publisher acknowledgements/confirms for better handling
** Also affects: oslo.messaging (Ubuntu)
Importance: Undecided
Status: New
** Also affects: oslo.messaging (Ubuntu Wily)
Importance: Undecided
Status: New
** Also affects: oslo.messaging (Ubuntu Vivid)
Importance: Undecided
Status: New
** Changed in: oslo.messaging