add var for username in flatcar

contrib/terraform/hetzner/modules/kubernetes-cluster-flatcar/main.tf

@@ -57,7 +57,7 @@ resource "hcloud_server" "master" {
     connection {
       host    = self.ipv4_address
       timeout = "3m"
-      user    = "core"
+      user    = ${var.user}
     }
 
     inline = [
@@ -114,7 +114,7 @@ resource "hcloud_server" "worker" {
     connection {
       host    = self.ipv4_address
       timeout = "3m"
-      user    = "core"
+      user    = ${var.user}
     }
 
     inline = [

contrib/terraform/hetzner/modules/kubernetes-cluster-flatcar/templates/machine.yaml.tmpl

@@ -1,7 +1,7 @@
 ---
 passwd:
   users:
-    - name: core
+    - name: ${user}
       ssh_authorized_keys: ${ssh_keys}
 storage:
   files:

contrib/terraform/hetzner/modules/kubernetes-cluster-flatcar/variables.tf

@@ -8,6 +8,11 @@ variable "prefix" {
   default = "k8s"
 }
 
+variable "user" {
+  type = string
+  default = "core"
+}
+
 variable "machines" {
   type = map(object({
     node_type = string
@@ -16,6 +21,8 @@ variable "machines" {
   }))
 }
 
+
+
 variable "ssh_public_keys" {
   type = list(string)
 }