新增learn-kubernetes（https://github.com/yyong-brs/learn-kubernetes）相关文件

learn/learn-kubernetes-master/kiamol/ch17/lab/kube-explorer/01-namespace.yaml

@@ -0,0 +1,6 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: kiamol-ch17-lab
+  labels:
+    kiamol: ch17-lab

learn/learn-kubernetes-master/kiamol/ch17/lab/kube-explorer/02-service-account.yaml

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+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: kube-explorer-lab
+  namespace: kiamol-ch17-lab
+automountServiceAccountToken: false

learn/learn-kubernetes-master/kiamol/ch17/lab/kube-explorer/03-rbac.yaml

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+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  name: default-pod-reader-lab  
+  labels:
+    kiamol: ch17-lab
+rules:
+- apiGroups: [""] #core
+  resources: ["pods"]
+  verbs: ["get", "list", "delete"]
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: RoleBinding
+metadata:
+  name: kube-explorer-lab-pods-default
+  namespace: default 
+  labels:
+    kiamol: ch17-lab
+subjects:
+- kind: ServiceAccount
+  name: kube-explorer-lab
+  namespace: kiamol-ch17-lab
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: default-pod-reader-lab

learn/learn-kubernetes-master/kiamol/ch17/lab/kube-explorer/04-deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: kube-explorer
+  namespace: kiamol-ch17-lab
+spec:
+  selector:
+    matchLabels:
+      app: kube-explorer
+  template:
+    metadata:
+      labels:
+        app: kube-explorer
+    spec:
+      serviceAccountName: kube-explorer-lab
+      automountServiceAccountToken: true
+      containers:
+        - image: kiamol/ch17-kube-explorer
+          name: web
+          ports:
+            - containerPort: 80
+              name: http
+          env:
+          - name: ASPNETCORE_ENVIRONMENT
+            value: Development

learn/learn-kubernetes-master/kiamol/ch17/lab/kube-explorer/05-service.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: kube-explorer
+  namespace: kiamol-ch17-lab
+spec:
+  ports:
+    - port: 8022
+      targetPort: http
+  selector:
+    app: kube-explorer
+  type: LoadBalancer