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/preinstall/tasks/0050-create_directories.yml

@@ -3,7 +3,7 @@
   file:
     path: "{{ item }}"
     state: directory
-    owner: kube
+    owner: "{{ kube_owner }}"
     mode: 0755
   when: inventory_hostname in groups['k8s_cluster']
   become: true
@@ -71,7 +71,7 @@
   file:
     path: "{{ item }}"
     state: directory
-    owner: kube
+    owner: "{{ kube_owner }}"
     mode: 0755
   with_items:
     - "/etc/cni/net.d"