Bugfix 2428 python csv input

[hsoh-u]

Expected Differences

The grib code should not be be converted to variable name for CSV

• Do these changes introduce new tools, command line arguments, or configuration file options? [No]
  
  If yes, please describe:
  

• Do these changes modify the structure of existing or add new output data types (e.g. statistic line types or NetCDF variables)? [No]
  
  If yes, please describe:
  

Pull Request Testing

• Describe testing already performed for these changes:
  

export TO_GRID='NONE'

/d1/personal/hsoh/git/pull_request/MET_bugfix_2428_python_csv_input/share/met/../../bin/plot_point_obs 'PYTHON_NUMPY=/d1/personal/hsoh/git/pull_request/MET_bugfix_2428_python_csv_input/share/met/python/read_ascii_point.py /d1/personal/hsoh/git/pull_request/MET_bugfix_2428_python_csv_input/data/sample_obs/ascii/precip24_2010010112.ascii' precip24_2010010112.ps -config /d1/personal/hsoh/git/pull_request/MET_bugfix_2428_python_csv_input/internal/test_unit/config/PlotPointObsConfig -plot_grid /d1/projects/MET/MET_test_data/unit_test/model_data/grib2/nam/nam_2012040900_F012.grib2 -title "Precip24 from python embedding" -gc 61 -v 3

The log message should include 822 locations for grib code 61:

DEBUG 3: For point data group 1, plotting 822 locations for 826 observations.
DEBUG 3: For point data group 2, plotting 0 locations for 0 observations.
DEBUG 3: For point data group 3, plotting 0 locations for 0 observations.

• Recommend testing for the reviewer(s) to perform, including the location of input datasets, and any additional instructions:
  

• Do these changes include sufficient documentation updates, ensuring that no errors or warnings exist in the build of the documentation? [No]

• Do these changes include sufficient testing updates? [No]

• Will this PR result in changes to the test suite? [No]
  
  If yes, describe the new output and/or changes to the existing output:
  

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[JohnHalleyGotway]

I approve of this change.

I did manual testing on seneca to confirm that this one-line fix does indeed fix python embedding for point observations specified by their GRIB code rather than observation variable name.

After approving, I will proceed with the merge myself.