feat: make kubernetes owner parametrized (#8952)

* feat: make kubernetes owner parametrized

* docs: update hardening guide with configuration for CIS 1.1.19

* fix: set etcd data directory permissions to be compliant to CIS 1.1.12

roles/kubernetes/control-plane/tasks/kubeadm-etcd.yml

@@ -16,3 +16,10 @@
   import_role:
     name: etcdctl
   when: etcd_deployment_type == "kubeadm"
+
+- name: Set ownership for etcd data directory
+  file:
+    path: "{{ etcd_data_dir }}"
+    owner: "{{ etcd_owner }}"
+    group: "{{ etcd_owner }}"
+    mode: 0700