feat: inline auth for MAAS

[mattwelke]

Issue

Resolves #200

Description

Moves the MAAS API token into the Auth struct so that all required credentials for MAAS are contained in one place.

Also includes a factor. Replaces each init<plugin>rule helper function with one initRule function that uses the new validation rule interface to set the name of each rule, regardless of whether the rule is manually named by users and regardless of which plugin it comes from.

Also updates each plugin to latest version.

[gitguardian]

⚠️ GitGuardian has uncovered 4 secrets following the scan of your pull request.

Please consider investigating the findings and remediating the incidents. Failure to do so may lead to compromising the associated services or software components.

🔎 Detected hardcoded secrets in your pull request

GitGuardian id	GitGuardian status	Secret	Commit	Filename
13388493	Triggered	Generic High Entropy Secret	03c7f48	tests/integration/_validator/testcases/data/validator.yaml	View secret
13388493	Triggered	Generic High Entropy Secret	03c7f48	hack/validator.tmpl	View secret
13388493	Triggered	Generic High Entropy Secret	03c7f48	tests/integration/_validator/testcases/data/validator.yaml	View secret
13388493	Triggered	Generic High Entropy Secret	03c7f48	hack/validator.tmpl	View secret

🛠 Guidelines to remediate hardcoded secrets

1. Understand the implications of revoking this secret by investigating where it is used in your code.
2. Replace and store your secrets safely. Learn here the best practices.
3. Revoke and rotate these secrets.
4. If possible, rewrite git history. Rewriting git history is not a trivial act. You might completely break other contributing developers' workflow and you risk accidentally deleting legitimate data.

To avoid such incidents in the future consider

• following these best practices for managing and storing secrets including API keys and other credentials
• install secret detection on pre-commit to catch secret before it leaves your machine and ease remediation.

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^{🦉 GitGuardian detects secrets in your source code to help developers and security teams secure the modern development process. You are seeing this because you or someone else with access to this repository has authorized GitGuardian to scan your pull request.}

[codecov]

Codecov Report

Attention: Patch coverage is 65.38462% with 27 lines in your changes missing coverage. Please review.

Files	Patch %	Lines
pkg/services/validator/vmware.go	50.00%	3 Missing and 10 partials ⚠️
pkg/services/validator/rule_names.go	42.85%	6 Missing and 2 partials ⚠️
pkg/services/validator/maas.go	44.44%	5 Missing ⚠️
pkg/services/clouds/maas_service.go	75.00%	0 Missing and 1 partial ⚠️

@@            Coverage Diff             @@
##             main     #198      +/-   ##
==========================================
- Coverage   53.52%   53.38%   -0.15%     
==========================================
  Files          44       45       +1     
  Lines        6294     6223      -71     
==========================================
- Hits         3369     3322      -47     
+ Misses       2076     2063      -13     
+ Partials      849      838      -11     

Files	Coverage Δ
pkg/cmd/validator/validator.go	58.51% <100.00%> (ø)
pkg/components/validator.go	58.38% <100.00%> (ø)
pkg/services/validator/aws.go	50.21% <100.00%> (-0.65%)	⬇️
pkg/services/validator/azure.go	40.78% <100.00%> (-0.20%)	⬇️
pkg/services/validator/network.go	47.01% <100.00%> (+0.03%)	⬆️
pkg/services/validator/oci.go	46.46% <100.00%> (+0.03%)	⬆️
...integration/_validator/testcases/test_validator.go	93.68% <ø> (-0.02%)	⬇️
pkg/services/clouds/maas_service.go	55.29% <75.00%> (ø)
pkg/services/validator/maas.go	45.00% <44.44%> (-1.39%)	⬇️
pkg/services/validator/rule_names.go	42.85% <42.85%> (ø)
... and 1 more

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[mattwelke]

Commits finished, ready for review.