changes required to leverage single domain record in demos\acme-consolidated\main.tf

module "dns" {
    source = "../../modules/dns/direct"
    ...
}

module "acme-cert" {
    source = "../../modules/acme-cert-request"
    acme_account_key_pem            = "${module.acme-reg.registration_private_key_pem}"  
    # acme_certificate_common_name    = "${module.dns.fqdn_domain_name}"
    # To make use of a single direct DNS record, comment out the line 
    # above, uncomment the one below, and ensure the dns module source
    # is loaded from modules/dns/direct. This current approach has been
    # done to remove a cyclic dependency.
    acme_certificate_common_name  = "${var.demo_domain_name}.${var.demo_domain_subdomain}"
    ...
}