Add api runtime config option, review kubernetes handlers

roles/kubernetes/master/tasks/config.yml

@@ -20,7 +20,7 @@
 - name: write the config files for api server
   template: src=apiserver.j2 dest={{ kube_config_dir }}/apiserver backup=yes
   notify:
-    - restart daemons
+    - restart apiserver
 
 - name: write config file for controller-manager
   template: src=controller-manager.j2 dest={{ kube_config_dir }}/controller-manager backup=yes
@@ -48,7 +48,7 @@
 - name: write the config files for proxy
   template: src=proxy.j2 dest={{ kube_config_dir }}/proxy backup=yes
   notify:
-    - restart daemons
+    - restart proxy
 
 - name: write the kubecfg (auth) file for proxy
   template: src=proxy.kubeconfig.j2 dest={{ kube_config_dir }}/proxy.kubeconfig backup=yes

roles/kubernetes/master/tasks/install.yml

@@ -1,19 +1,19 @@
 ---
 - name: Write kube-apiserver systemd init file
   template: src=systemd-init/kube-apiserver.service.j2 dest=/etc/systemd/system/kube-apiserver.service backup=yes
-  notify: restart daemons
+  notify: restart apiserver
 
 - name: Write kube-controller-manager systemd init file
   template: src=systemd-init/kube-controller-manager.service.j2 dest=/etc/systemd/system/kube-controller-manager.service backup=yes
-  notify: restart daemons
+  notify: restart controller-manager
 
 - name: Write kube-scheduler systemd init file
   template: src=systemd-init/kube-scheduler.service.j2 dest=/etc/systemd/system/kube-scheduler.service backup=yes
-  notify: restart daemons
+  notify: restart scheduler
 
 - name: Write kube-proxy systemd init file
   template: src=systemd-init/kube-proxy.service.j2 dest=/etc/systemd/system/kube-proxy.service backup=yes
-  notify: restart daemons
+  notify: restart proxy
 
 - name: Install kubernetes binaries
   copy: