converted logstream to app package
Merge branch 'dt-dev' of https://github.com/DataTorrent/Malhar into logstream_appPkg
changed packaging to jar
removed unused dependencies
removed properties of default appPkg application
Add option to throttle Kafka consumer.

Conflicts:
	contrib/src/main/java/com/datatorrent/contrib/kafka/AbstractKafkaInputOperator.java
Remove redundant tuplesBlast setting, holding buffer capacity provides the same control.

Conflicts:
	benchmark/src/main/java/com/datatorrent/benchmark/kafka/KafkaInputBenchmark.java