Update User Guide and Admin links to point to new resources. (#3438)

* Update links to outdated user-guide and admin docs

* Add script for updating outdated links.

* Update regex to include init-containers file.

* Pull upstream, rewrite links in and to namespaces walkthrough.

docs/tasks/administer-cluster/change-default-storage-class.md

@@ -84,7 +84,7 @@ for details about addon manager and how to disable individual addons.
 {% endcapture %}
 
 {% capture whatsnext %}
-* Learn more about [StorageClasses](/docs/user-guide/persistent-volumes/).
+* Learn more about [StorageClasses](/docs/concepts/storage/persistent-volumes/).
 {% endcapture %}
 
 {% include templates/task.md %}

docs/tasks/administer-cluster/change-pv-reclaim-policy.md

@@ -67,7 +67,7 @@ the corresponding `PersistentVolume` is not be deleted. Instead, it is moved to
 {% endcapture %}
 
 {% capture whatsnext %}
-* Learn more about [PersistentVolumes](/docs/user-guide/persistent-volumes/).
+* Learn more about [PersistentVolumes](/docs/concepts/storage/persistent-volumes/).
 * Learn more about [PersistentVolumeClaims](/docs/user-guide/persistent-volumes/#persistentvolumeclaims).
 
 ### Reference

docs/tasks/administer-cluster/dns-horizontal-autoscaling.md

@@ -11,7 +11,7 @@ Kubernetes cluster.
 
 * {% include task-tutorial-prereqs.md %}
 
-* Make sure the [DNS feature](/docs/admin/dns/) itself is enabled.
+* Make sure the [DNS feature](/docs/concepts/services-networking/dns-pod-service/) itself is enabled.
 
 * Kubernetes version 1.4.0 or later is recommended.
 
@@ -225,7 +225,7 @@ a future development. The current implementation, which uses the number of nodes
 and cores in cluster, is limited.
 
 Support for custom metrics, similar to that provided by
-[Horizontal Pod Autoscaling](/docs/user-guide/horizontal-pod-autoscaling/),
+[Horizontal Pod Autoscaling](/docs/tasks/run-application/horizontal-pod-autoscale/),
 is under consideration as a future development.
 
 {% endcapture %}

docs/tasks/administer-cluster/namespaces-walkthrough.md

@@ -9,7 +9,7 @@ Kubernetes _namespaces_ help different projects, teams, or customers to share a
 
 It does this by providing the following:
 
-1. A scope for [Names](/docs/user-guide/identifiers/).
+1. A scope for [Names](/docs/concepts/overview/working-with-objects/names/).
 2. A mechanism to attach authorization and policy to a subsection of the cluster.
 
 Use of multiple namespaces is optional.
@@ -21,7 +21,7 @@ This example demonstrates how to use Kubernetes namespaces to subdivide your clu
 This example assumes the following:
 
 1. You have an [existing Kubernetes cluster](/docs/getting-started-guides/).
-2. You have a basic understanding of Kubernetes _[Pods](/docs/user-guide/pods/)_, _[Services](/docs/user-guide/services/)_, and _[Deployments](/docs/user-guide/deployments/)_.
+2. You have a basic understanding of Kubernetes _[Pods](/docs/concepts/workloads/pods/pod/)_, _[Services](/docs/concepts/services-networking/service/)_, and _[Deployments](/docs/concepts/workloads/controllers/deployment/)_.
 
 ### Step One: Understand the default namespace
 

docs/tasks/administer-cluster/overview.md

@@ -66,7 +66,7 @@ project](/docs/admin/salt).
 
 ## Multi-tenant support
 
-* **Resource Quota** ([resourcequota](/docs/admin/resourcequota/))
+* **Resource Quota** ([resourcequota](/docs/concepts/policy/resource-quotas/))
 
 ## Security
 
@@ -87,6 +87,6 @@ project](/docs/admin/salt).
 * **Audit** [audit](/docs/admin/audit)
 
 * **Securing the kubelet**
-  * [Master-Node communication](/docs/admin/master-node-communication/)
+  * [Master-Node communication](/docs/concepts/cluster-administration/master-node-communication/)
   * [TLS bootstrapping](/docs/admin/kubelet-tls-bootstrapping/)
   * [Kubelet authentication/authorization](/docs/admin/kubelet-authentication-authorization/)

docs/tasks/administer-cluster/safely-drain-node.md

@@ -14,7 +14,7 @@ disruption SLOs you have specified using PodDisruptionBudget.
 This task assumes that you have met the following prerequisites:
 
 * You are using Kubernetes release >= 1.5.
-* You have created [PodDisruptionBudget(s)](/docs/admin/disruptions/) to express the
+* You have created [PodDisruptionBudget(s)](/docs/tasks/configure-pod-container/configure-pod-disruption-budget/) to express the
 application-level disruption SLOs you want the system to enforce.
 
 {% endcapture %}