🚀 Added resolving env variables in plans

[swiftyfinch]

Description

With these changes plans can access environment variables in three different ways:

usual:
- command: warmup
  argument: $(S3_ENDPOING)
  headers: 'secret-key: ${RUGBY_S3_SECRET_KEY}'
  except: $BAD_POD_TARGET_NAME0

References

• 🚗 Rugby Roadmap #357

Checklist (I have ...)

• 🧐 Followed the code style of the rest of the project
• 📖 Updated the documentation, if necessary
• 👨🏻‍🔧 Added at least one test which validates that my change is working, if appropriate
• 👮🏻‍♂️ Run make lint and fixed all warnings
• ✅ Run make test and fixed all tests

❤️ Thanks for contributing to the 🏈 Rugby!

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 64.13%. Comparing base (d273ed2) to head (67c4872).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #385      +/-   ##
==========================================
+ Coverage   64.07%   64.13%   +0.06%     
==========================================
  Files         150      150              
  Lines        3908     3929      +21     
==========================================
+ Hits         2504     2520      +16     
- Misses       1404     1409       +5     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[kattouf]

🚀