refactor: 구조 변경

infrastructure/components/vault-kubernetes-roles/README.md

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+# Vault Kubernetes roles
+
+## 책임
+
+Vault Kubernetes auth role을 입력 map에서 생성하는 backend 없는 재사용
+Terraform component입니다.
+
+## 입력과 출력
+
+- 입력: auth backend 경로와 role별 audience, ServiceAccount, namespace,
+  policy, TTL
+- 출력: 없음
+- 민감 payload: 없음
+
+호출하는 live root가 provider와 state를 소유합니다. 이 component는 환경
+이름이나 credential을 내부에 저장하지 않습니다.

infrastructure/components/vault-kubernetes-roles/main.tf

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+resource "vault_kubernetes_auth_backend_role" "this" {
+  for_each = var.roles
+
+  audience                         = one(each.value.audiences)
+  backend                          = var.backend
+  bound_service_account_names      = each.value.service_account_names
+  bound_service_account_namespaces = each.value.service_account_namespaces
+  role_name                        = each.key
+  token_policies                   = each.value.token_policies
+  token_ttl                        = each.value.token_ttl
+}

infrastructure/components/vault-kubernetes-roles/variables.tf

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+variable "backend" {
+  description = "Kubernetes auth backend path."
+  type        = string
+}
+
+variable "roles" {
+  description = "Kubernetes auth roles keyed by Vault role name."
+  type = map(object({
+    audiences                  = set(string)
+    service_account_names      = set(string)
+    service_account_namespaces = set(string)
+    token_policies             = set(string)
+    token_ttl                  = number
+  }))
+}

infrastructure/components/vault-kubernetes-roles/versions.tf

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+terraform {
+  required_version = ">= 1.11.0"
+
+  required_providers {
+    vault = {
+      source  = "hashicorp/vault"
+      version = "~> 5.7.0"
+    }
+  }
+}