rename handler to fix ansible 2.8 issue (#5801)

roles/kubernetes/node/handlers/main.yml

@@ -1,5 +1,5 @@
 ---
-- name: restart kubelet
+- name: Node | restart kubelet
   command: /bin/true
   notify:
     - Kubelet | reload systemd

roles/kubernetes/node/tasks/install.yml

@@ -35,7 +35,7 @@
   tags:
     - kubelet
     - upgrade
-  notify: restart kubelet
+  notify: Node | restart kubelet
 
 - name: install | Set kubelet binary permissions
   file:

roles/kubernetes/node/tasks/kubelet.yml

@@ -23,7 +23,7 @@
     src: "kubelet.env.{{ kubeadmConfig_api_version }}.j2"
     dest: "{{ kube_config_dir }}/kubelet.env"
     backup: yes
-  notify: restart kubelet
+  notify: Node | restart kubelet
   when: kubeadm_output.stdout is version('v1.13.0', '>=')
   tags:
     - kubelet
@@ -43,7 +43,7 @@
     src: "kubelet.service.j2"
     dest: "/etc/systemd/system/kubelet.service"
     backup: "yes"
-  notify: restart kubelet
+  notify: Node | restart kubelet
   tags:
     - kubelet
     - kubeadm

roles/kubernetes/node/tasks/main.yml

@@ -221,7 +221,7 @@
   when:
     - cloud_provider is defined
     - cloud_provider in [ 'openstack', 'azure', 'vsphere', 'aws' ]
-  notify: restart kubelet
+  notify: Node | restart kubelet
   tags:
     - cloud-provider