Download kubeconf for each cluster, not once for all

Instead of downloading only the kubeconf of the 1st cluster processed, download it for
each cluster.

Author: eliasp

tasks/summary.yml

@@ -5,10 +5,9 @@
     src: /etc/rancher/rke2/rke2.yaml
     dest: "{{ rke2_download_kubeconf_path }}/{{ rke2_download_kubeconf_file_name }}"
     flat: yes
-  delegate_to: "{{ groups[rke2_servers_group_name].0 }}"
-  run_once: true
   when:
   - rke2_download_kubeconf | bool
+  - inventory_hostname == groups[rke2_servers_group_name].0
 
 - name: Replace loopback IP by master server IP
   ansible.builtin.replace: