Rename CLC files and favor Terraform list index syntax

* Rename Container Linux Config (CLC) files to *.yaml to align
with Fedora CoreOS Config (FCC) files and for syntax highlighting
* Replace common uses of Terraform `element` (which wraps around)
with `list[index]` syntax to surface index errors

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

@@ -31,7 +31,7 @@ resource "matchbox_profile" "container-linux-install" {
 data "template_file" "container-linux-install-configs" {
   count = length(var.controllers) + length(var.workers)
 
-  template = file("${path.module}/cl/install.yaml.tmpl")
+  template = file("${path.module}/cl/install.yaml")
 
   vars = {
     os_flavor          = local.flavor
@@ -72,7 +72,7 @@ resource "matchbox_profile" "cached-container-linux-install" {
 data "template_file" "cached-container-linux-install-configs" {
   count = length(var.controllers) + length(var.workers)
 
-  template = file("${path.module}/cl/install.yaml.tmpl")
+  template = file("${path.module}/cl/install.yaml")
 
   vars = {
     os_flavor          = local.flavor
@@ -150,7 +150,7 @@ data "ct_config" "controller-ignitions" {
 data "template_file" "controller-configs" {
   count = length(var.controllers)
 
-  template = file("${path.module}/cl/controller.yaml.tmpl")
+  template = file("${path.module}/cl/controller.yaml")
 
   vars = {
     domain_name            = var.controllers.*.domain[count.index]
@@ -180,7 +180,7 @@ data "ct_config" "worker-ignitions" {
 data "template_file" "worker-configs" {
   count = length(var.workers)
 
-  template = file("${path.module}/cl/worker.yaml.tmpl")
+  template = file("${path.module}/cl/worker.yaml")
 
   vars = {
     domain_name            = var.workers.*.domain[count.index]

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

@@ -2,7 +2,7 @@ locals {
   # format assets for distribution
   assets_bundle = [
     # header with the unpack location
-    for key, value in module.bootstrap.assets_dist:
+    for key, value in module.bootstrap.assets_dist :
     format("##### %s\n%s", key, value)
   ]
 }