Add tag to AWS VPC subnets for automatic subnet discovery by load balancers or...

Add tag to AWS VPC subnets for automatic subnet discovery by load balancers or ingress controllers (#8705)

contrib/terraform/aws/modules/vpc/main.tf

@@ -31,7 +31,8 @@ resource "aws_subnet" "cluster-vpc-subnets-public" {
 
   tags = merge(var.default_tags, tomap({
     Name = "kubernetes-${var.aws_cluster_name}-${element(var.aws_avail_zones, count.index)}-public"
-    "kubernetes.io/cluster/${var.aws_cluster_name}" = "member"
+    "kubernetes.io/cluster/${var.aws_cluster_name}" = "shared"
+    "kubernetes.io/role/elb" = "1"
   }))
 }
 
@@ -49,6 +50,8 @@ resource "aws_subnet" "cluster-vpc-subnets-private" {
 
   tags = merge(var.default_tags, tomap({
     Name = "kubernetes-${var.aws_cluster_name}-${element(var.aws_avail_zones, count.index)}-private"
+    "kubernetes.io/cluster/${var.aws_cluster_name}" = "shared"
+    "kubernetes.io/role/internal-elb" = "1"
   }))
 }