previous document suggests to put config to /root/.docker/config.json
which is not always the case, and only works when the HOME=/root is
set for kubelet. Besides, that's not always the most recommended way
considering the potential risk when someone overrides this config
with another `docker login` on the same node. this change explicitly
lists all the possible locations where the configuration can be put.
* update admission-controller links
(cherry picked from commit 37043991a61e5e6f4ac1c463b14c65430b192553)
* updated links found using greedier regex
(cherry picked from commit 45c6d4cf7430245a3b4e81eae245000beea88841)
* correct link in cn/docs/admin/authorization/_index.md
* fix incorrect changes introduced in eac3619
* undo update of cn content
* fix link
* fix admission webhook link
makocchi
zhouhaibing089
Bob Killen
Takuya Tokuda
Bjørn Erik Pedersen