implement a simple test for columns and sheets in the data file.

[ShaiahWren]

[AAP-38383]

This pr adds a test in metrics-utility/test/shipped_data/test_RENEWAL_GUIDANCE.py
It opens the xlsx file and verifies spreadsheet tabs (sheet names) and columns for each.

Testing

• In root dir metrics-utility create virtual environment 'venv' and activate it:
  python -m venv venv
  source venv/bin/activate
• install pytest (different for each OS)
• run pytest metrics_utility/test/shipped_data/test_RENEWAL_GUIDANCE.py

Expected Results

All tests should pass

[MilanPospisil]

Its good start! However, there was some miscommunication:

This test should test CCSPv2 report (as the name of your branch suggests :-) and as it is described in your issue :-) )

No worries, you learned something and different tests will be similar to each other.

Let this PR to be draft, we will return to it later once we will write Renewal guidance - we are waiting for Martin to prepare testing DB.

Please unlink this PR from CCSPv2 issue and create new PR that will test CCSPv2 report properly. We will have call today about it, so you are on the same page :-)

[ShaiahWren]

Closing and replacing with #41.