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

learn/learn-kubernetes-master/kiamol/ch03/numbers-services/api-service-externalName.yaml

@@ -0,0 +1,7 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: numbers-api
+spec:
+  type: ExternalName
+  externalName: raw.githubusercontent.com

learn/learn-kubernetes-master/kiamol/ch03/numbers-services/api-service-headless.yaml

@@ -0,0 +1,18 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: numbers-api
+spec:
+  type: ClusterIP
+  ports:
+    - port: 80
+---
+kind: Endpoints
+apiVersion: v1
+metadata:
+  name: numbers-api
+subsets:
+  - addresses:
+      - ip: 192.168.123.234
+    ports:
+      - port: 80

learn/learn-kubernetes-master/kiamol/ch03/numbers-services/web-service-nodePort.yaml

@@ -0,0 +1,12 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: numbers-web-node
+spec:
+  ports:
+    - port: 8080
+      targetPort: 80
+      nodePort: 30080
+  selector:
+    app: numbers-web
+  type: NodePort