[COST-4973] - Fix mid month finalization

[lcouzens]

Jira Ticket

COST-4973

Description

This change will add an additional check to prevent us from potentially running full month reprocessing/finalisation on current months. This also prevents us from deleting ALL parquet files by mistake.

Testing

1. Checkout Branch
2. Restart Koku with multiple workers ideally
3. Add AWS source
4. Run initial ingest!
5. Generate some new nise data (This needs to be split files, --file-row-limit)
6. Hit download
7. Verify only 5 days of parquet files are deleted and recreated

Feel free to compare to main, same steps as above but all parquet files outside the processing range will get cleared by mistake.

Release Notes

• Correctly handle AWS end of Tax year billing reports

* [COST-4973](https://issues.redhat.com/browse/COST-4973) Correctly handle AWS end of Tax year billing reports

[codecov]

Codecov Report

Merging #5060 (65d07bd) into main (7fb758c) will increase coverage by 0.0%.
The diff coverage is 100.0%.

Additional details and impacted files

@@          Coverage Diff          @@
##            main   #5060   +/-   ##
=====================================
  Coverage   94.1%   94.1%           
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  Files        377     377           
  Lines      31331   31331           
  Branches    3714    3714           
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+ Hits       29492   29493    +1     
  Misses      1172    1172           
+ Partials     667     666    -1