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

learn/learn-kubernetes-master/kiamol/ch12/numbers/api-service.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: numbers-api
+  labels:
+    kiamol: ch12
+spec:
+  ports:
+    - port: 8013
+      targetPort: api
+  selector:
+    app: numbers-api
+  type: LoadBalancer

learn/learn-kubernetes-master/kiamol/ch12/numbers/api.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: numbers-api
+  labels:
+    kiamol: ch12
+spec:
+  replicas: 2
+  selector:
+    matchLabels:
+      app: numbers-api
+  template:
+    metadata:
+      labels:
+        app: numbers-api
+    spec:
+      containers:
+        - name: api
+          image: kiamol/ch03-numbers-api
+          ports:
+            - containerPort: 80
+              name: api
+          env:
+            - name: FailAfterCallCount
+              value: "1"
+

learn/learn-kubernetes-master/kiamol/ch12/numbers/update/api-with-readiness-and-liveness.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: numbers-api
+  labels:
+    kiamol: ch12
+spec:
+  replicas: 2
+  selector:
+    matchLabels:
+      app: numbers-api
+  template:
+    metadata:
+      labels:
+        app: numbers-api
+        version: v3
+    spec:
+      restartPolicy: Always
+      containers:
+        - name: api
+          image: kiamol/ch03-numbers-api
+          ports:
+            - containerPort: 80
+              name: api
+          env:
+            - name: FailAfterCallCount
+              value: "1"
+          readinessProbe:
+            httpGet:
+              path: /healthz
+              port: 80
+            periodSeconds: 5
+          livenessProbe:
+            httpGet:
+              path: /healthz
+              port: 80
+            periodSeconds: 10
+            initialDelaySeconds: 10
+            failureThreshold: 2
+
+

learn/learn-kubernetes-master/kiamol/ch12/numbers/update/api-with-readiness.yaml

@@ -0,0 +1,33 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: numbers-api
+  labels:
+    kiamol: ch12
+spec:
+  replicas: 2
+  selector:
+    matchLabels:
+      app: numbers-api
+  template:
+    metadata:
+      labels:
+        app: numbers-api
+        version: v2
+    spec:
+      restartPolicy: Always
+      containers:
+        - name: api
+          image: kiamol/ch03-numbers-api
+          ports:
+            - containerPort: 80
+              name: api
+          env:
+            - name: FailAfterCallCount
+              value: "1"
+          readinessProbe:
+            httpGet:
+              path: /healthz
+              port: 80
+            periodSeconds: 5
+