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

learn/learn-kubernetes-master/kiamol/ch12/pi/namespace-with-quota/01-namespace.yaml

@@ -0,0 +1,6 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: kiamol-ch12-cpu
+  labels:
+    kiamol: ch12

learn/learn-kubernetes-master/kiamol/ch12/pi/namespace-with-quota/02-cpu-quota.yaml

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+apiVersion: v1
+kind: ResourceQuota
+metadata:
+  name: cpu-quota
+  namespace: kiamol-ch12-cpu
+spec:
+  hard:
+    limits.cpu: 500m

learn/learn-kubernetes-master/kiamol/ch12/pi/namespace-with-quota/03-web-service.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: pi-web
+  namespace: kiamol-ch12-cpu
+  labels:
+    kiamol: ch12
+spec:
+  ports:
+    - port: 8012
+      targetPort: http
+  selector:
+    app: pi-web
+  type: LoadBalancer

learn/learn-kubernetes-master/kiamol/ch12/pi/namespace-with-quota/04-web.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: pi-web
+  namespace: kiamol-ch12-cpu
+  labels:
+    kiamol: ch12
+spec:
+  replicas: 2
+  selector:
+    matchLabels:
+      app: pi-web
+  template:
+    metadata:
+      labels:
+        app: pi-web
+    spec:
+      containers:
+        - image: kiamol/ch05-pi
+          command: ["dotnet", "Pi.Web.dll", "-m", "web"]
+          name: web
+          ports:
+            - containerPort: 80
+              name: http
+          resources:
+            limits:
+              cpu: 300m