In Getting Started/Set up the Batch Scoring pipeline, diabetes_regression-batchscoring-ci.yml does not complete successfully

[cmayomsft]

In the step below, the diabetes_regression-batchscoring-ci.yml does not complete successfully.

The model_name and model_version variables are not being set/defaulted, so the pipeline fails.

https://github.com/microsoft/MLOpsPython/blob/master/docs/getting_started.md#set-up-the-batch-scoring-pipeline