Protect against configuration changes

[JimMadge]

✅ Checklist

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⤴️ Summary

Add protection for configuration changes,

• Add method to print diff in YAML for YamlSerialisableModel
• Add method to print diff for local/remote for AzureSerialisableModel
• Improve upload commands to prompt user before making changes to config
  • displays diff to user, asks for y/n
• Tests for methods and commands

🌂 Related issues

Closes #1714

🔬 Tests

[github-actions]

Coverage report

Click to see where and how coverage changed

File	Statements	Missing	Coverage	Coverage (new stmts)	Lines missing
data_safe_haven/commands
config.py
data_safe_haven/serialisers
azure_serialisable_model.py
yaml_serialisable_model.py
data_safe_haven/utility
logger.py
tests/commands
test_config.py
tests/serialisers
test_azure_serialisable_model.py
test_yaml_serialisable_model.py
Project Total

This report was generated by python-coverage-comment-action

[jemrobinson]

Looks good. A couple of questions.

[craddm]

LGTM