Bugfix: s3_file_to_parquet function doesn't override content encoding if provided with the override kwarg

[pfaraone]

Summary

This change no longer raises ContentTypeValidationError from s3_file_to_parquet if appropriately overridden

Rationale

-Although the "Allow overriding content encoding" bugfix
was merged into DeltaCAT and released in 1.1.30, the overriding does not properly happen during the compaction session which results in in a raised ContentTypeValidationError
when the underlying file is gzip encoded - even if the override_content_encoding_for_parquet is provided.

Changes

• Added check for override_content_encoding_for_parquet
• Adding unit testing coverage for s3_file_to_parquet from no coverage including the default case

Impact

• Small blast radius - this should allow for additional tables to be onboard if they are gzip encoded but overriden

Testing

• Added unit testing coverage

Regression Risk

• Low as the control flow is only changed if override_content_encoding_for_parquet kwarg is provided

Checklist

• Unit tests covering the changes have been added

  • If this is a bugfix, regression tests have been added

• E2E testing has been performed

Additional Notes

Any additional information or context relevant to this PR.

[raghumdani]

LGTM