parquet-hadoop tests to work with hadoop 3.4.0

Test runs of parquet-hadoop with -Dhadoop.version=3.4.0 fail because there's a logback jar on the classpath, which screws things up (mostly seemingly because it suddenly logs at debug)

HADOOP-19084 should have fixed this, as it explicitly excludes the export. clearly not. created HADOOP-19153 as a followup.

For now, all parquet needs is to exclude logback as a hadoop-common dependency. I'll be extra cautious and get rid of all log dependencies.