Merge pull request #29002 from Arhell/update

[zh] Operator: Exists missing

Author: k8s-ci-robot

content/zh/examples/controllers/daemonset.yaml

@@ -18,6 +18,7 @@ spec:
       # this toleration is to have the daemonset runnable on master nodes
       # remove it if your masters can't run pods
       - key: node-role.kubernetes.io/master
+        operator: Exists
         effect: NoSchedule
       containers:
       - name: fluentd-elasticsearch