* New upstream release for OpenStack Kilo, including enablement
  of RabbitMQ heartbeating for improved connection failure detection
  (LP: #856764):
  - d/p/zmq-redis-fix-topic-registration.patch,
    d/p/disable-zmq-tests.patch: Dropped, included upstream.
  - d/p/zmq-client-pooling.patch: Rebase.
  - d/p/disable-new-executors.patch: Disable hard requirement for
    trollius and aioeventlet executors for vivid release.
  - d/control: Align minimum version requirements with upstream.
* d/pydist-overrides: Add overrides for new oslo package naming.
* Misc fixes for zmq driver:
  - d/p/Fix-changing-keys-during-iteration-in-matchmaker-hea.patch:
    Fix changing keys during iteration in matchmaker heartbeat
    (LP: #1432966).
  - d/p/Add-pluggability-for-matchmakers.patch: Add entry points
    for matchmaker drivers (LP: #1291701).