feat: add helm and kubectl to kubernetes_common

ansible/roles/kubernetes_common/tasks/packages.yaml

@@ -4,5 +4,6 @@
       - kubeadm
       - kubelet
       - containerd
-      - open-iscsi
+      - kubectl
+      - helm
     update_cache: true

ansible/roles/kubernetes_common/tasks/repo.yaml

@@ -6,3 +6,13 @@
     suites: /
     signed_by: https://pkgs.k8s.io/core:/stable:/v1.36/deb/Release.key
     state: present
+
+- name: Add Helm APT repository
+  ansible.builtin.deb822_repository:
+    name: helm
+    types: deb
+    uris: https://packages.buildkite.com/helm-linux/helm-debian/any/
+    suites: any
+    components: main
+    signed_by: https://packages.buildkite.com/helm-linux/helm-debian/gpgkey
+    state: present