Add hosted Terraform module manifest and discovery contract#254
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Motivation
Hosted IaC scanning needs a stable scanner-side contract for discovering Terraform module calls and consuming server-prefetched module directories without enabling network fetches inside the scanner subprocess.
Changes
CLI
Add
list-modulesso hosted services can enumerate Terraform module calls as JSON before server-side materialization.Manifest scanning
Allow manifest-only module resolution via
--x-remote-modules-manifest, enable local module evaluation when a manifest or.terraform/modulescache is present, and validate manifest version constraints against resolved module versions.Stability
Strip registry module version segments from Terraform fingerprints so upgrading a remote module does not churn finding identity.
QA Instruction
go test ./cmd/scanner ./pkg/parser/terraform/modules/modulegraph ./pkg/parser/terraform/modules/resolver ./pkg/scan ./pkg/modelgolangci-lint run -c .golangci.yml --timeout 20m./bin/datadog-iac-scanner list-modules -p <terraform-root>./bin/datadog-iac-scanner scan -p <terraform-root> --x-remote-modules-manifest <modules.json>Impact
Adds the hosted module discovery and manifest contract on top of the bounded module graph work in #253.