fix: resolve terraform validation errors and pre-commit configuration issues

- Remove duplicate terraform configuration blocks from secure_backup_configuration example
- Move configuration_aliases from main.tf to versions.tf to prevent duplication
- Add exclusions for temporary test files in pre-commit configuration
- Add retry logic for terraform validation to handle transient issues

Co-authored-by: Luis M. Gallardo D. <lgallard@users.noreply.github.com>

Author: claude[bot]

.pre-commit-config.yaml

@@ -21,13 +21,19 @@ repos:
     rev: v1.83.0  # Use more stable version
     hooks:
       - id: terraform_fmt
+        exclude: '^test_.*\.tf$|.*test_formatting\.tf$'  # Exclude temporary test files
       - id: terraform_validate
+        exclude: '^test_.*\.tf$|.*test_formatting\.tf$'  # Exclude temporary test files
+        args:
+          - --hook-config=--retry-once-with-cleanup=true  # Retry validation with cleanup
       - id: terraform_docs
         args:
           - --args=--config=.terraform-docs.yml  # Use config file for consistent documentation
+        exclude: '^test_.*\.tf$|.*test_formatting\.tf$'  # Exclude temporary test files
       - id: terraform_tflint  # Added terraform linter
         args:
           - --args=--config=.tflint.hcl
+        exclude: '^test_.*\.tf$|.*test_formatting\.tf$'  # Exclude temporary test files
 # Temporarily disabled terraform_checkov due to missing checkov installation in CI
       # - id: terraform_checkov  # Added security scanner
       #   args:

examples/secure_backup_configuration/main.tf

@@ -1,18 +1,6 @@
 # Secure AWS Backup Configuration Example
 # This example demonstrates enterprise-grade backup security practices
 
-terraform {
-  required_version = ">= 1.0"
-
-  required_providers {
-    aws = {
-      source  = "hashicorp/aws"
-      version = ">= 5.0"
-      configuration_aliases = [aws.cross_region]
-    }
-  }
-}
-
 # Data sources for account and region information
 data "aws_caller_identity" "current" {}
 data "aws_region" "current" {}

examples/secure_backup_configuration/versions.tf

@@ -7,6 +7,7 @@ terraform {
     aws = {
       source  = "hashicorp/aws"
       version = ">= 5.0"
+      configuration_aliases = [aws.cross_region]
     }
   }
 }