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/debug-application-cluster/debug-cluster.md

@@ -2,9 +2,6 @@
 assignees:
 - davidopp
 title: Troubleshoot Clusters
-redirect_from:
-- "/docs/admin/cluster-troubleshooting/"
-- "/docs/admin/cluster-troubleshooting.html"
 ---
 
 This doc is about cluster troubleshooting; we assume you have already ruled out your application as the root cause of the