feat(dev-3124): Pin Terraform provider versions via required_providers

[osterman]

what

• Create unified pkg/generator package with registry pattern for Terraform file generation
• Implement required_providers and required_version support in stack configurations
• Add atmos terraform generate required-providers CLI command
• Auto-generate terraform_override.tf.json with version constraints during terraform commands
• Update JSON schema to support new configuration fields

why

This feature allows users to pin Terraform and provider versions per component, improving reproducibility and reducing dependency-related issues. The unified generator package consolidates file generation logic for better maintainability.

references

Closes #3124

[github-actions]

Dependency Review

✅ No vulnerabilities or license issues found.

Scanned Files

None

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📥 Commits

Reviewing files that changed from the base of the PR and between 38eb63c and f000d70.

📒 Files selected for processing (28)

• cmd/terraform/generate/required_providers/required_providers.go (1 hunks)
• cmd/terraform_generate.go (3 hunks)
• errors/errors.go (1 hunks)
• internal/exec/stack_processor_merge.go (2 hunks)
• internal/exec/stack_processor_process_stacks_helpers.go (2 hunks)
• internal/exec/stack_processor_process_stacks_helpers_extraction.go (1 hunks)
• internal/exec/stack_processor_process_stacks_helpers_inheritance.go (2 hunks)
• internal/exec/stack_processor_process_stacks_helpers_overrides.go (2 hunks)
• internal/exec/stack_processor_utils.go (4 hunks)
• internal/exec/terraform.go (1 hunks)
• internal/exec/terraform_generate_required_providers.go (1 hunks)
• internal/exec/terraform_utils.go (3 hunks)
• internal/exec/utils.go (4 hunks)
• pkg/config/const.go (1 hunks)
• pkg/datafetcher/schema/stacks/stack-config/1.0.json (4 hunks)
• pkg/generator/errors.go (1 hunks)
• pkg/generator/generator.go (1 hunks)
• pkg/generator/generator_test.go (1 hunks)
• pkg/generator/options.go (1 hunks)
• pkg/generator/providers/generator.go (1 hunks)
• pkg/generator/providers/generator_test.go (1 hunks)
• pkg/generator/registry.go (1 hunks)
• pkg/generator/required_providers/generator.go (1 hunks)
• pkg/generator/required_providers/generator_test.go (1 hunks)
• pkg/generator/varfile/generator.go (1 hunks)
• pkg/generator/varfile/generator_test.go (1 hunks)
• pkg/generator/writer.go (1 hunks)
• pkg/schema/schema.go (2 hunks)

✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch feature/dev-3124-pin-provider-versions-of-components-using-terraform

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[github-actions]

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