Fix scale.yml to supoort kubeadm (#1863)

Signed-off-by: Haiwei Liu <carllhw@gmail.com>

roles/kubernetes/kubeadm/handler/main.yml

@@ -0,0 +1,5 @@
+---
+- name: restart kubelet
+  service:
+    name: kubelet
+    state: restarted

roles/kubernetes/kubeadm/tasks/main.yml

@@ -38,10 +38,11 @@
 - name: Update server field in kubelet kubeconfig
   replace:
     path: "{{ kube_config_dir }}/kubelet.conf"
-    regexp: '(\s+){{ first_kube_master }}:{{ kube_apiserver_port }}(\s+.*)?$'
+    regexp: '(\s+)https://{{ first_kube_master }}:{{ kube_apiserver_port }}(\s+.*)?$'
     replace: '\1{{ kube_apiserver_endpoint }}\2'
     backup: yes
   when: not is_kube_master and kubeadm_discovery_address != kube_apiserver_endpoint
+  notify: restart kubelet
 
 # FIXME(mattymo): Reconcile kubelet kubeconfig filename for both deploy modes
 - name: Symlink kubelet kubeconfig for calico/canal