Switch PROD DNS from cross-account Route 53 management to a delegated
subdomain in the PROD AWS account (523761210517).
Changes:
- prod.tfvars: domain_name changed to prod-sacc.ccsoft.mx
- provider.tf: removed aws.route53 cross-account provider
- main.tf: removed prod-specific Route 53 resources and data sources;
cert_validation and main records now use default provider for all envs
- outputs.tf: removed indexed references to main_prod resource
Evert Daniel Romero Garrido
ce22f776ff