add toleration for kubernetes-dashboard

Change-Id: I02233393e29c0df5a7b63a30b914961afa5a6efb
diff --git a/kubernetes/files/kube-addons/dashboard/dashboard-controller.yaml b/kubernetes/files/kube-addons/dashboard/dashboard-controller.yaml
index f74fddb..1135f29 100644
--- a/kubernetes/files/kube-addons/dashboard/dashboard-controller.yaml
+++ b/kubernetes/files/kube-addons/dashboard/dashboard-controller.yaml
@@ -18,6 +18,9 @@
         scheduler.alpha.kubernetes.io/critical-pod: ''
         scheduler.alpha.kubernetes.io/tolerations: '[{"key":"CriticalAddonsOnly", "operator":"Exists"}]'
     spec:
+      tolerations:
+        - key: node-role.kubernetes.io/master
+          effect: NoSchedule
       containers:
       - name: kubernetes-dashboard
         image: gcr.io/google_containers/kubernetes-dashboard-amd64:v1.5.1