AVRO-2875: Add logging to avro-tools (#925)
AVRO-2875: Add logging to avro-tools (#925)

* AVRO-2875: Add logging to avro-tools

* Use slf4j-log4j12 instead of slf4j-simple
apache/avro,apache/avro,apache/avro,apache/avro,apache/avro,apache/avro,apache/avro,apache/avro,apache/avro,apache/avro,apache/avro,apache/avro