[C++][Parquet] Add encrypted parquet files to apache parquet-testing repository

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Add encrypted parquet files to apache parquet-testing repository (https://github.com/apache/parquet-testing) for the purpose of testing.

Reporter: Revital Sur / @revit13
Assignee: Revital Sur / @revit13

PRs and other links:

• GitHub Pull Request #7

_{Note: This issue was originally created as PARQUET-1621. Please see the migration documentation for further details.}

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Revital Sur / @revit13:
Pull request: apache/parquet-testing#7

[asfimport]

Micah Kornfield / @emkornfield:
It looks like the PR is merged, can should this be closed?