Speed up Summarize tests in CI

[fayvor]

#149

• Truncate text in CI by looking at GRANITE_TEST env var

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.

[fayvor]

Tests will fail until this is merged:
ibm-granite-community/utils#19

[rawkintrevo]

if get_env_var('GRANITE_TEST').lower() == 'true' book_contents[:20000]

[adampingel]

The name of the variable is GRANITE_TESTING

[fayvor]

Will update.

[fayvor]

Agentic_RAG is failing trying to load langchain_ibm for WatsonxLLM. Not sure if this is deterministic, but I believe it has to do with the version of langchain-ibm that pip resolves to.

[adampingel]

Will address @rawkintrevo's feedback in this ticket ibm-granite-community/utils#20