zh-trans: add replication-controller.md (#11259)

* zh-trans: add replication-controller.md

zh-trans: add replication-controller.md

* Update replication-controller.md

content/zh/docs/reference/glossary/replication-controller.md

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+---
+title: Replication Controller
+id: replication-controller
+date: 2018-04-12
+full_link: 
+short_description: >
+  Replication Controller 是 Kubernetes 的一种服务，用来确保给定个数的 Pod 一直处于运行状态。
+
+aka: 
+tags:
+- workload
+- core-object
+---
+
+<!--
+---
+title: Replication Controller
+id: replication-controller
+date: 2018-04-12
+full_link: 
+short_description: >
+  Kubernetes service that ensures a specific number of instances of a pod are always running.
+
+aka: 
+tags:
+- workload
+- core-object
+---
+-->
+
+<!--
+ Kubernetes service that ensures a specific number of instances of a pod are always running.
+-->
+
+Replication Controller 是 Kubernetes 的一种服务，用来确保给定个数的 Pod 一直处于运行状态。
+
+<!--more--> 
+
+<!--
+Will automatically add or remove running instances of a pod, based on a set value for that pod. Allows the pod to return to the defined number of instances if pods are deleted or if too many are started by mistake.
+-->
+
+Replication Controller 会基于设定值自动增删 Pod 的实例。如果 Pod 被误删除或者启动实例过多，Replication Controller 允许 Pod 的实例个数恢复到设定值。