Update bootstrap module control plane manifests and type constraints

* Remove unneeded control plane flags that correspond to defaults
* Adopt Terraform v0.12 type constraints in bootstrap module

aws/container-linux/kubernetes/bootstrap.tf

@@ -1,6 +1,6 @@
 # Kubernetes assets (kubeconfig, manifests)
 module "bootstrap" {
-  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=586d6e36f67c56fb2283f317a7552638368c5779"
+  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=10d9cec5c256f4622712bf01448df1a2befc37c8"
 
   cluster_name          = var.cluster_name
   api_servers           = [format("%s.%s", var.cluster_name, var.dns_zone)]

aws/fedora-coreos/kubernetes/bootstrap.tf

@@ -1,6 +1,6 @@
 # Kubernetes assets (kubeconfig, manifests)
 module "bootstrap" {
-  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=586d6e36f67c56fb2283f317a7552638368c5779"
+  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=10d9cec5c256f4622712bf01448df1a2befc37c8"
 
   cluster_name          = var.cluster_name
   api_servers           = [format("%s.%s", var.cluster_name, var.dns_zone)]

azure/container-linux/kubernetes/bootstrap.tf

@@ -1,6 +1,6 @@
 # Kubernetes assets (kubeconfig, manifests)
 module "bootstrap" {
-  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=586d6e36f67c56fb2283f317a7552638368c5779"
+  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=10d9cec5c256f4622712bf01448df1a2befc37c8"
 
   cluster_name = var.cluster_name
   api_servers  = [format("%s.%s", var.cluster_name, var.dns_zone)]

bare-metal/container-linux/kubernetes/bootstrap.tf

@@ -1,6 +1,6 @@
 # Kubernetes assets (kubeconfig, manifests)
 module "bootstrap" {
-  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=586d6e36f67c56fb2283f317a7552638368c5779"
+  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=10d9cec5c256f4622712bf01448df1a2befc37c8"
 
   cluster_name                    = var.cluster_name
   api_servers                     = [var.k8s_domain_name]

bare-metal/fedora-coreos/kubernetes/bootstrap.tf

@@ -1,6 +1,6 @@
 # Kubernetes assets (kubeconfig, manifests)
 module "bootstrap" {
-  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=586d6e36f67c56fb2283f317a7552638368c5779"
+  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=10d9cec5c256f4622712bf01448df1a2befc37c8"
 
   cluster_name                    = var.cluster_name
   api_servers                     = [var.k8s_domain_name]

digital-ocean/container-linux/kubernetes/bootstrap.tf

@@ -1,6 +1,6 @@
 # Kubernetes assets (kubeconfig, manifests)
 module "bootstrap" {
-  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=586d6e36f67c56fb2283f317a7552638368c5779"
+  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=10d9cec5c256f4622712bf01448df1a2befc37c8"
 
   cluster_name = var.cluster_name
   api_servers  = [format("%s.%s", var.cluster_name, var.dns_zone)]

google-cloud/container-linux/kubernetes/bootstrap.tf

@@ -1,6 +1,6 @@
 # Kubernetes assets (kubeconfig, manifests)
 module "bootstrap" {
-  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=586d6e36f67c56fb2283f317a7552638368c5779"
+  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=10d9cec5c256f4622712bf01448df1a2befc37c8"
 
   cluster_name          = var.cluster_name
   api_servers           = [format("%s.%s", var.cluster_name, var.dns_zone)]