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

learn/learn-kubernetes-master/kiamol/ch21/add-todo-to-hosts.ps1

@@ -0,0 +1,9 @@
+
+$controller='ingress-nginx-controller'
+$ns='kiamol-ingress-nginx'
+$ip=$(kubectl get svc $controller -o jsonpath='{.status.loadBalancer.ingress[0].*}' -n $ns)
+if ($ip -eq 'localhost') {
+	$ip='127.0.0.1'
+}
+
+Add-Content -Value "$ip  todo.kiamol.local$([Environment]::NewLine)$ip  api.todo.kiamol.local" -Path C:/windows/system32/drivers/etc/hosts