Upgrade Kafka to 0.10.2.0 and bump java+scala to latest

[solsson]

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[solsson]

This kafka build starts all right, and forms a cluster, but the stuff in ./test/ no longer works. See #21.

According to broker logs, topic creation fails with

[2017-03-01 14:42:50,331] ERROR [KafkaApi-0] Error when handling request {controller_id=0,controller_epoch=1,partition_states=[{topic=test3,partition=0,controller_epoch=1,leader=1,leader_epoch=0,isr=[1,2,0],zk_version=0,replicas=[1,2,0]}],live_leaders=[{id=1,host=kafka-1.broker.kafka.svc.cluster.local,port=9092}]} (kafka.server.KafkaApis)
java.io.IOException: Invalid argument
	at sun.nio.ch.FileChannelImpl.map0(Native Method)

but oddly the job happily exits with Created topic "test2" and ./bin/kafka-topics.sh --zookeeper zookeeper:2181 --list reports the topics as existing.

[solsson]

#30 starts from this branch with the ambition to test replication/partitioning aspects