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ARROW-16943: [Java][Packaging] Fix nigthly build problem that generates excessive jars (#13485)

Since June 24 the nightly build is generating multiple jars for the same module.

In that example: https://github.com/ursacomputing/crossbow/releases/tag/nightly-packaging-2022-06-24-0-github-java-jars you can find three different jars for the arrow-gandiva.

The commit purpose is clean the .m2 folder before executing the clean install command and copy the artifacts to the folder where they will be uploaded.

Authored-by: Anthony Louis <anthony.louis@dremio.com>
Signed-off-by: Sutou Kouhei <kou@clear-code.com>