move kubefed to /docs/reference/generated directory (kubernetes#6325)

* move kubefed to docs/reference/generated

* update _redirects and _data/referenerce.yaml

_data/reference.yml

@@ -73,12 +73,12 @@ toc:
   - docs/admin/kubeadm.md
   - title: Kubefed
     section:
-    - docs/admin/kubefed.md
-    - docs/admin/kubefed_options.md
-    - docs/admin/kubefed_init.md
-    - docs/admin/kubefed_join.md
-    - docs/admin/kubefed_unjoin.md
-    - docs/admin/kubefed_version.md
+    - docs/reference/generated/kubefed.md
+    - docs/reference/generated/kubefed_options.md
+    - docs/reference/generated/kubefed_init.md
+    - docs/reference/generated/kubefed_join.md
+    - docs/reference/generated/kubefed_unjoin.md
+    - docs/reference/generated/kubefed_version.md
 
 - title: Config Reference
   section:

_redirects

@@ -410,3 +410,10 @@
 /v1.1/docs/getting-started-guides/     /docs/tutorials/kubernetes-basics/ 301
 
 https://kubernetes-io-v1-7.netlify.com/*    https://v1-7.docs.kubernetes.io/"splat 301
+
+/docs/admin/kubefed/     /docs/reference/generated/kubefed/ 301
+/docs/admin/kubefed_init/    /docs/reference/generated/kubefed_init/ 301 
+/docs/admin/kubefed_join/    /docs/reference/generated/kubefed_join/ 301
+/docs/admin/kubefed_options/    /docs/reference/generated/kubefed_options/ 301
+/docs/admin/kubefed_unjoin/     /docs/reference/generated/kubefed_unjoin/ 301 
+/docs/admin/kubefed_version/    /docs/reference/generated/kubefed_version/ 301