added_new_bmi_output_variable

[ajkhattak]

The PR adds SOIL_TO_GW_FLUX (percolation) variable to BMI output list for our baseline simulations. The code was already computing this variable to so no changes to the functionality.

Additions

• Added a new variable to the BMI output list

Removals

• None

Testing

1. The changes have been tested against the master branch, and the branch yields identical results

Checklist

• PR has an informative and human-readable title
• Changes are limited to a single goal (no scope creep)
• Code can be automatically merged (no conflicts)
• Passes all existing automated tests
• Reviewers requested with the Reviewers tool ➡️

[SnowHydrology]

@ajkhattak Do we need to add any other output vars to CFE or is this it for NWM Baseline?

[ajkhattak]

This is the only missing output variable in CFE for the NWM baseline

[SnowHydrology]

@ajkhattak, the changes look good, but the unit test build fails (see #89). Can you update that so we can unit test the updated BMI functionality? Thanks

[ajkhattak]

@SnowHydrology sure, we haven't updated the unittest in a while, so let me see what's going on there.