Speed up Summarize test

[fayvor]

#149

• Take a default value for get_env_var() and set_env_var(), so we can use them to retrieve GRANITE_TESTING and others.

PR Checklist

• Commits signed: All commits must be GPG or SSH signed.
• DCO Compliance: Developer Certificate of Origin (DCO) applies to the code, documentation, and any example data provided. Ensure commits are signed off.
• Notebook outputs cleared: Ensure all notebook outputs are cleared.
• Automated testing: Add the recipe to the automated tests.
• Test in Google Colab:
  • Test that it works in Google Colab (Python 3.10.12).
  • Colab has its own package set and Python version, so ensure compatibility.
• Test locally:
  • Ensure the code works in a fresh Python virtual environment (venv).
• Flexible LLM platform support:
  • The platform should be easily switchable. Use LangChain for now.
  • Include !pip install git+https://github.com/ibm-granite-community/granite-kitchen in the instructions.
• Example data: Follow the example data guidance.
• README.md updates:
  • Add a link to the recipe in the Table of Contents (ToC).
  • Include a Colab button after that link.

[rawkintrevo]

this is a lot of code that could just be handled in one line:

env_var = os.environ.get(var_name, default_value)

[adampingel]

@fayvor Since this is blocking tests passing, let's get this in, and come back to @rawkintrevo's point

[fayvor]

@rawkintrevo I'm not sure what you are suggesting, sorry. That line doesn't have the same outcome.

[adampingel]

@fayvor Since this is blocking tests passing, let's get this in, and come back to @rawkintrevo's point

[adampingel]

@rawkintrevo @fayvor To look at the utils package closer: #20