feat: remove unecessary board var

The install script can detect the board itself.

README.md

@@ -70,7 +70,6 @@ for [`cluster-api-provider-hetzner`](https://github.com/syself/cluster-api-provi
 The following variables are supported:
 
 - `$architecture`: The Hetzner Cloud API architecture (`x86` or `arm`).
-- `$board`: The Flatcar Board identifier for the architecture (`amd64-usr` or `arm64-usr`).
 - `$version`: The Flatcar version, if you are using `current`, this is resolved to the actual version in the snapshot.
 - `$channel`: The Flatcar release channel.
 
@@ -78,7 +77,6 @@ The default labels are:
 
 - `os=flatcar`
 - `flatcar-channel=$channel`
-- `flatcar-board=$board`
 - `version=$version`
 - `architecture=$architecture`
 

flatcar.pkr.hcl

@@ -34,25 +34,18 @@ variable "version" {
 variable "labels" {
   // Available replacements:
   // $architecture
-  // $board
   // $channel
   // $version - if "current" was specified, this is resolved to the actual version
   type = map(string)
   default = {
     os              = "flatcar"
     flatcar-channel = "$channel"
-    flatcar-board   = "$board"
     version         = "$version"
     architecture    = "$architecture"
   }
 }
 
 locals {
-  boards = {
-    x86 = "amd64-usr"
-    arm = "arm64-usr"
-  }
-
   architectures = ["x86", "arm"]
 
   // If the user wants the "current" version, we still want to make the
@@ -89,11 +82,10 @@ build {
       snapshot_name = "flatcar-${var.channel}-${local.version}-${source.value}"
 
       snapshot_labels = {
-        for k, v in var.labels : k => replace(replace(replace(replace(v,
+        for k, v in var.labels : k => replace(replace(replace(v,
           "$channel", var.channel),
           "$version", local.version),
-          "$architecture", source.value),
-          "$board", local.boards[source.value])
+          "$architecture", source.value)
       }
     }
   }
@@ -106,7 +98,7 @@ build {
       "chmod +x flatcar-install",
 
       # Install flatcar
-      "./flatcar-install -s -o hetzner -C ${var.channel} -B ${local.boards[source.name]} -V ${var.version} ",
+      "./flatcar-install -s -o hetzner -C ${var.channel} -V ${var.version} ",
     ]
   }
 }