feat: Make the cluster name configurable (#1379)

bootstrap/templates/kubernetes/bootstrap/talos/talconfig.yaml.j2

@@ -5,7 +5,7 @@ talosVersion: v1.6.6
 # renovate: datasource=docker depName=ghcr.io/siderolabs/kubelet
 kubernetesVersion: v1.29.3
 
-clusterName: &cluster home-kubernetes
+clusterName: &cluster #{ bootstrap_cluster_name|default('home-kubernetes', true) }#
 endpoint: https://#{ bootstrap_controllers_vip }#:6443
 clusterPodNets:
   - "#{ bootstrap_pod_network.split(',')[0] }#"

bootstrap/templates/partials/cilium-values-full.partial.yaml.j2

@@ -9,7 +9,7 @@ cgroup:
   hostRoot: /sys/fs/cgroup
 cluster:
   id: 1
-  name: home-kubernetes
+  name: #{ bootstrap_cluster_name|default('home-kubernetes', true) }#
 containerRuntime:
   integration: containerd
   #% if bootstrap_distribution in ["k3s"] %#

bootstrap/templates/partials/cilium-values-init.partial.yaml.j2

@@ -9,7 +9,7 @@ cgroup:
   hostRoot: /sys/fs/cgroup
 cluster:
   id: 1
-  name: home-kubernetes
+  name: #{ bootstrap_cluster_name|default('home-kubernetes', true) }#
 containerRuntime:
   integration: containerd
   #% if bootstrap_distribution in ["k3s"] %#