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

learn/learn-kubernetes-master/kiamol/ch21/lab/todo-list/todo-web-ingress.yaml

@@ -0,0 +1,18 @@
+apiVersion: networking.k8s.io/v1beta1 
+kind: Ingress
+metadata:
+  name: todo-web
+  namespace: todo
+  labels:
+    kiamol: ch21-lab
+  annotations:
+    kubernetes.io/ingress.class: contour-external
+spec:
+  rules:
+  - host: todo.kiamol.local
+    http:
+      paths:
+      - path: /
+        backend:
+          serviceName: todo-web
+          servicePort: 80