restart scheduler and controller-manager too

roles/kubernetes/master/tasks/post-upgrade.yml

@@ -1,4 +1,13 @@
 ---
+- name: "Post-upgrade | restart kubelet on all masters"
+  service:
+    name: kubelet
+    state: restarted
+  delegate_to: "{{item}}"
+  with_items: "{{groups['kube-master']}}"
+  register: kube_apiserver_manifest_replaced
+  when: needs_etcd_migration|bool
+
 - name: "Post-upgrade | etcd3 upgrade | purge etcd2 k8s data"
   command: "{{ bin_dir }}/etcdctl --endpoints={{ etcd_access_addresses }} rm -r /registry"
   environment: