Show statistics in the dump output

[asfimport]

Reporter: Thomas White / @tomwhite
Assignee: Thomas White / @tomwhite

Related issues:

• Release Parquet-mr 1.9.0 (blocks)
• Printing out the statistics of metadata in parquet-tools (is duplicated by)

PRs and other links:

• PR #237

_{Note: This issue was originally created as PARQUET-327. Please see the migration documentation for further details.}

[asfimport]

Thomas White / @tomwhite:
See PR #237.

[asfimport]

Ryan Blue / @rdblue:
Thanks for fixing this, Tom! I've committed your changes along with the suggestions on the PR.