Eia861 2022

[aesharpe]

This PR adds in EIA861 early release data.
The only quirks were that the directory name was different from the zipfile name, so the file_map includes a prefix of f8612022er/ for each of the files, and a change in skip rows for the reliability table in 2021. It also adds an encoding step for the reliability table to avoid foreign key failures.

The former might change for the regular release data. See issue #2780 (linked)

There are no tests for 861 so that's all we've got.

[e-belfer]

I think you'll have to add reliability_eia861 to the exceptions list for the momentary_interruptions_eia table to fix this last error.

FAILED test/integration/etl_test.py::test_pudl_engine - pudl.io_managers.ForeignKeyErrors: Foreign key error for table: reliability_eia861 -- momentary_interruptions_eia (code) -- on rows [18738]

[zaneselvans]

Looks good assuming the CI passes successfully -- we should look at some of the stuff that's downstream too, like the service territory tables.

[codecov]

Codecov Report

Patch coverage: 100.0% and no project coverage change.

Comparison is base (cce89d1) 88.3% compared to head (b9d3228) 88.4%.
Report is 45 commits behind head on dev.

Additional details and impacted files

@@          Coverage Diff          @@
##             dev   #2782   +/-   ##
=====================================
  Coverage   88.3%   88.4%           
=====================================
  Files         89      90    +1     
  Lines      10206   10193   -13     
=====================================
- Hits        9021    9016    -5     
+ Misses      1185    1177    -8     

Files Changed	Coverage Δ
src/pudl/metadata/codes.py	100.0% <ø> (ø)
src/pudl/metadata/sources.py	100.0% <ø> (ø)
src/pudl/workspace/datastore.py	75.6% <ø> (+1.8%)	⬆️
src/pudl/transform/eia861.py	97.4% <100.0%> (+<0.1%)	⬆️

... and 6 files with indirect coverage changes

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