rename handler to fix ansible 2.8 issue (#5801)

roles/kubernetes/kubeadm/handlers/main.yml

@@ -1,5 +1,15 @@
 ---
-- name: restart kubelet
+- name: Kubeadm | restart kubelet
+  command: /bin/true
+  notify:
+    - Kubeadm | reload systemd
+    - Kubeadm | reload kubelet
+
+- name: Kubeadm | reload systemd
+  systemd:
+    daemon_reload: true
+
+- name: Kubeadm | reload kubelet
   service:
     name: kubelet
     state: restarted

roles/kubernetes/kubeadm/tasks/main.yml

@@ -101,7 +101,7 @@
     - kubeadm_config_api_fqdn is not defined
     - not is_kube_master
     - kubeadm_discovery_address != kube_apiserver_endpoint | replace("https://", "")
-  notify: restart kubelet
+  notify: Kubeadm | restart kubelet
 
 # FIXME(mattymo): Need to point to localhost, otherwise masters will all point
 #                 incorrectly to first master, creating SPoF.