Refactored kubeadm join process and fixed uncrodonng for master nodes

roles/kubernetes/kubeadm/tasks/main.yml

@@ -28,16 +28,14 @@
   register: temp_token
   delegate_to: "{{ groups['kube-master'][0] }}"
 
-- name: Override predefined kubeadm_token that expires after 24h
-  set_fact:
-    kubeadm_token: "{{ temp_token.stdout }}"
-    
 - name: Create kubeadm client config
   template:
     src: kubeadm-client.conf.j2
     dest: "{{ kube_config_dir }}/kubeadm-client.conf"
     backup: yes
   when: not is_kube_master
+  vars:
+    kubeadm_token: "{{ temp_token.stdout }}"
   register: kubeadm_client_conf
 
 - name: Join to cluster if needed