This does away with the giant dump from cobra for kubectl and instead
generates md files which contain similar information, but one per verb.
This might work well as part of the cobra project, instead of doing it
in kube, but this gets us nice, linked, documentation right now. If
people like it, I will try to get something similar into cobra.
generate man pages for kubectl using the cobra.Command information.
This will directly create files in (by default) docs/man/man1/ called
kubectl*.1. Each child verb/cobra command will gets its own man page.
--sync_nodes=false gives user flexibility to add/remove nodes in the
cluster using REST api/kubectl cli and at the same time can use
cloud provider for other resources like persistent disks, etc.
Part of #108.
Also:
* Added hyperkube cmd (not built by default yet).
* Added version support to hyperkube
* Remove health_check_minions flag from apiserver as it is no longer used with #3733
