fix: be a bit smarter when reloading kernel modules

bootstrap/templates/ansible/playbooks/cluster-prepare.yaml.j2

@@ -100,13 +100,15 @@
             fstype: swap
             state: absent
           loop: ["none", "swap"]
-        - name: System Configuration | Kernel modules (1)
+        - name: System Configuration | Create Kernel modules
           ansible.builtin.copy:
             dest: "/etc/modules-load.d/{% raw %}{{ item }}{% endraw %}.conf"
             mode: "0644"
             content: "{% raw %}{{ item }}{% endraw %}"
           loop: ["br_netfilter", "ceph", "ip_vs", "ip_vs_rr", "nbd", "overlay", "rbd"]
-        - name: System Configuration | Kernel modules (2)
+          register: modules_status
+        - name: System Configuration | Reload Kernel modules # noqa: no-changed-when no-handler
+          when: modules_status.changed
           ansible.builtin.systemd:
             name: systemd-modules-load
             state: restarted