Upgrade to Kafka 0.8.2.2
Upgrade to Kafka 0.8.2.2

Upgrade Kafka to current stable release - 0.8.2.2.
Upgrade Scala version to 2.11.

Change-Id: I113997fc1c3124bc1073cb261d6b6f873c6fc6b2

sapcc/monasca-thresh,sapcc/monasca-thresh,openstack/monasca-thresh,openstack/monasca-thresh,stackforge/monasca-thresh,stackforge/monasca-thresh,openstack/monasca-thresh