Merge release1.14 into master (#16584)

* initial commit

* promote AWS-NLB Support from alpha to beta (#14451) (#16459) (#16484)

* 1. Sync release-1.15 into master
2. Sync with en version

* 1. Add the lost yaml file.

* Update he cluster administration folder of concepts
1. Sync with 1.14 branch
2. Sync with en version

* Add yaml files which are used

* 1. Sync the configuration folder from 1.14 version
2. Sync the configuration folder files with en version
3. Changed some files structure for easily review
4. Add glossary folder for fixup build error

* 1. Sync the storage folder from 1.14 version
2. Sync the storage folder files with 1.16 version en document
3. Changed some files structure for easily review

* 1. Sync the service-networking folder from 1.14 version
2. Sync the service-networking folder files with 1.16 version en document
3. Changed some files structure for easily review
4. Add the necessary documents
5. Add the runtime-class file

content/zh/docs/reference/glossary/ingress.md

@@ -0,0 +1,24 @@
+---
+title: Ingress
+id: ingress
+date: 2018-04-12
+full_link: /docs/concepts/services-networking/ingress/
+short_description: >
+  An API object that manages external access to the services in a cluster, typically HTTP.
+
+aka: 
+tags:
+- networking
+- architecture
+- extension
+---
+<!--
+ An API object that manages external access to the services in a cluster, typically HTTP.
+-->
+一个 API 对象，用于管理对集群中服务的外部访问，通常是 HTTP。
+
+<!--more--> 
+<!--
+Ingress can provide load balancing, SSL termination and name-based virtual hosting.
+-->
+Ingress 可以提供负载平衡，SSL 终端和基于名称的虚拟主机。