[dmt] Validate package.yaml requirements

[diyliv]

Summary

Add package.yaml requirements validation for the new module requirements schema:

• Parse package.yaml metadata and subscribe sections: Read apiVersion, name, requirements, and subscribe fields used by module package validation.
• Validate package.yaml requirements constraints as-is: Parse all non-empty Kubernetes, Deckhouse, mandatory, conditional, and anyOf module constraints with semver without stripping legacy markers such as !optional.
• Require Deckhouse >= 1.77 for new requirements schema: When the new requirements structure is used, require requirements.deckhouse.constraint and ensure its lower bound starts no lower than 1.77.0.

Example

apiVersion: v2
name: stronghold

requirements:
  kubernetes:
    constraint: ">= 1.26"
  deckhouse:
    constraint: ">= 1.77.0"
  modules:
    mandatory:
      - name: cloud-provider-yandex
        constraint: ">= 1.5.0"
    conditional:
      - name: observability
        constraint: ">= 1.0.0"
    anyOf:
      - description: "One of the following cloud providers must be installed"
        modules:
          - name: cloud-provider-gcp
            constraint: ">= 1.5.0"
          - name: cloud-provider-aws
            constraint: ">= 2.0.0"

Legacy markers in constraint fields are rejected:

requirements:
  modules:
    conditional:
      - name: observability
        constraint: ">= 1.0.0 !optional"

[Copilot]

Pull request overview

Adds a new Module linter rule to validate optional package.yaml metadata and enforce constraints for the new module requirements schema (including a minimum Deckhouse version when the new schema is detected).

Changes:

• Introduces package-yaml rule: parses package.yaml, validates required metadata, validates semver constraints “as-is”, and enforces requirements.deckhouse.constraint >= 1.77.0 when the new schema is used.
• Adds unit tests covering parsing, metadata validation, constraint validation, and the Deckhouse-minimum requirement logic.
• Wires the new rule into module linter execution and global rule configuration, and documents the new rule in the module linter README.

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
pkg/linters/module/rules/package_yaml.go	Implements the new package.yaml parsing + validation rule, including Deckhouse >= 1.77.0 enforcement for the new schema.
pkg/linters/module/rules/package_yaml_test.go	Adds test coverage for parsing and validation behaviors of the new rule.
pkg/linters/module/README.md	Documents the new package-yaml rule and updates the rules list/count and examples.
pkg/linters/module/module.go	Registers and runs the new package-yaml rule during module linting.
pkg/config/global/global.go	Adds package-yaml to global module rule configs (impact mapping).
pkg/config.go	Adds PackageYAMLRule to the runtime module linter rules config struct.
internal/module/module.go	Maps global rule impact configuration into the runtime PackageYAMLRule level.

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[diyliv]

fixed

[diyliv]

fixed