Fix root dns (#22)

Author: goruha

aws/root-dns/parent-audit-ns.tf

@@ -3,6 +3,7 @@ variable "audit_name_servers" {
 }
 
 resource "aws_route53_record" "audit_dns_zone_ns" {
+  count   = "${signum(length(var.audit_name_servers))}"
   zone_id = "${aws_route53_zone.parent_dns_zone.zone_id}"
   name    = "audit"
   type    = "NS"

aws/root-dns/parent-dev-ns.tf

@@ -3,6 +3,7 @@ variable "dev_name_servers" {
 }
 
 resource "aws_route53_record" "dev_dns_zone_ns" {
+  count   = "${signum(length(var.dev_name_servers))}"
   zone_id = "${aws_route53_zone.parent_dns_zone.zone_id}"
   name    = "dev"
   type    = "NS"

aws/root-dns/parent-local-ns.tf

@@ -3,6 +3,7 @@ variable "local_name_servers" {
 }
 
 resource "aws_route53_record" "local_dns_zone_ns" {
+  count   = "${signum(length(var.local_name_servers))}"
   zone_id = "${aws_route53_zone.parent_dns_zone.zone_id}"
   name    = "local"
   type    = "NS"

aws/root-dns/parent-prod-ns.tf

@@ -3,6 +3,7 @@ variable "prod_name_servers" {
 }
 
 resource "aws_route53_record" "prod_dns_zone_ns" {
+  count   = "${signum(length(var.prod_name_servers))}"
   zone_id = "${aws_route53_zone.parent_dns_zone.zone_id}"
   name    = "prod"
   type    = "NS"

aws/root-dns/parent-staging-ns.tf

@@ -3,6 +3,7 @@ variable "staging_name_servers" {
 }
 
 resource "aws_route53_record" "staging_dns_zone_ns" {
+  count   = "${signum(length(var.staging_name_servers))}"
   zone_id = "${aws_route53_zone.parent_dns_zone.zone_id}"
   name    = "staging"
   type    = "NS"

aws/root-dns/parent-testing-ns.tf

@@ -3,6 +3,7 @@ variable "testing_name_servers" {
 }
 
 resource "aws_route53_record" "testing_dns_zone_ns" {
+  count   = "${signum(length(var.testing_name_servers))}"
   zone_id = "${aws_route53_zone.parent_dns_zone.zone_id}"
   name    = "testing"
   type    = "NS"