fix: remove condition for user creation (#9125)

This condition blocks the creation of the `etcd` user in certain conditions.
Specifically, when you have a `etcd_deployment_type: kubeadm` and `kube_owner: root`.
Being the `root` user already present on the system, this will not be a problem (due to the idempotency of ansible).

roles/adduser/tasks/main.yml

@@ -13,4 +13,4 @@
     shell: "{{ user.shell|default(omit) }}"
     name: "{{ user.name }}"
     system: "{{ user.system|default(omit) }}"
-  when: kube_owner != "root"
+  when: user.name != "root"