feat: update e2e ruby test

[danielstokes]

updates the test case so that newrelic_rpm is actually loaded

Description

Type of change

• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• New feature / enhancement (non-breaking change which adds functionality)
• Security fix
• Bug fix (non-breaking change which fixes an issue)

Checklist:

• Documentation has been updated
• This change requires changes in testing:
  • unit tests
  • E2E tests

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 68.35%. Comparing base (e2c44c1) to head (045577b).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #414   +/-   ##
=======================================
  Coverage   68.35%   68.35%           
=======================================
  Files          46       46           
  Lines        3454     3454           
=======================================
  Hits         2361     2361           
  Misses        925      925           
  Partials      168      168           

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