Add content about the Alibaba cloud provider

Author: gujingit

content/en/docs/concepts/cluster-administration/cloud-providers.md

@@ -422,3 +422,12 @@ If you wish to use the external cloud provider, its repository is [TencentCloud/
 
 The Tencent cloud provider uses the hostname of the node (as determined by the kubelet or overridden with `--hostname-override`) as the name of the Kubernetes Node object.
 Note that the Kubernetes Node name must match the Tencent VM private IP.
+
+## Alibaba Cloud Kubernetes  
+
+ If you wish to use the external cloud provider, its repository is [kubernetes/cloud-provider-alibaba-cloud](https://github.com/kubernetes/cloud-provider-alibaba-cloud).   
+
+### Node Name  
+
+Alibaba Cloud does not require the format of node name, but the kubelet needs to add `--provider-id=${REGION_ID}.${INSTANCE_ID}`. The parameter `${REGION_ID}` represents the region id of the Kubernetes and `${INSTANCE_ID}` denotes the Alibaba ECS (Elastic Compute Service) ID.  
+

content/en/docs/concepts/services-networking/service.md

@@ -692,6 +692,15 @@ metadata:
 [...]
 ```
 {{% /tab %}}
+{{% tab name="Alibaba Cloud" %}}
+```yaml
+[...]
+metadata:
+  annotations:  
+    service.beta.kubernetes.io/alibaba-cloud-loadbalancer-address-type: "intranet"
+[...]
+```
+{{% /tab %}}
 {{< /tabs >}}
 
 

content/zh/docs/concepts/architecture/cloud-controller.md

@@ -479,7 +479,7 @@ The following cloud providers have implemented CCMs:
 * [OpenStack](https://github.com/kubernetes/cloud-provider-openstack)
 * [Oracle](https://github.com/oracle/oci-cloud-controller-manager)
 -->
-
+* [Alibaba Cloud](https://github.com/kubernetes/cloud-provider-alibaba-cloud)  
 * [AWS](https://github.com/kubernetes/cloud-provider-aws)
 * [Azure](https://github.com/kubernetes/cloud-provider-azure)
 * [BaiduCloud](https://github.com/baidu/cloud-provider-baiducloud)