Changes for move to Netlify (#4464)

* disable jekyll-redirect-from gem

* add _redirects file

* disable 404 redirect script

* add 301 redirect to test

* retain _redirects file

* Convert redirect_from's to _redirect file. (#4409)

* Remove redirect_from's. (#4424)

* Add 301's to _redirects. (#4427)

* add whitespace before 301

* move redirects in /js/redirects/js to _redirects

* add disabled option for cn redirect

* convert include to array in _config.yml

* enable redirects.js script for legacy support

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

@@ -3,9 +3,6 @@ assignees:
 - derekwaynecarr
 - janetkuo
 title: Namespaces Walkthrough
-redirect_from:
-- "/docs/admin/namespaces/walkthrough/"
-- "/docs/admin/namespaces/walkthrough.html"
 ---
 
 Kubernetes _namespaces_ help different projects, teams, or customers to share a Kubernetes cluster.
@@ -153,9 +150,9 @@ Let's create some contents.
 ```shell
 $ kubectl run snowflake --image=kubernetes/serve_hostname --replicas=2
 ```
-We have just created a deployment whose replica size is 2 that is running the pod called snowflake with a basic container that just serves the hostname. 
+We have just created a deployment whose replica size is 2 that is running the pod called snowflake with a basic container that just serves the hostname.
 Note that `kubectl run` creates deployments only on Kubernetes cluster >= v1.2. If you are running older versions, it creates replication controllers instead.
-If you want to obtain the old behavior, use `--generator=run/v1` to create replication controllers. See [`kubectl run`](/docs/user-guide/kubectl/v1.6/#run) for more details. 
+If you want to obtain the old behavior, use `--generator=run/v1` to create replication controllers. See [`kubectl run`](/docs/user-guide/kubectl/v1.6/#run) for more details.
 
 ```shell
 $ kubectl get deployment