KAFKA-901 follow up changes to fix update metadata response handling and request logging
Minor logging fix
kafka-907; controller needs to close socket channel to brokers on exception ; patched by Jun Rao; reviewed by Neha Narkhede
KAFKA-914; Break deadlock between initial rebalance and watcher-triggered rebalances; reviewed by Jun Rao and Neha Narkhede
Merge branch '0.8' of https://git-wip-us.apache.org/repos/asf/kafka into 0.8