Since it is unsupported to skip upgrades, I've detailed the steps for upgrading a step at a time and removed some language that indicated it should work
Clarify that the `kube_version` environment variable is needed for the CLI "graceful upgrade". Also add and example to check that the upgrade was successful.
Based on #718 introduced by rsmitty.
Includes all roles and all options to support deployment of
new hosts in case they were added to inventory.
Main difference here is that master role is evaluated first
so that master components get upgraded first.
Fixes#694
Dennis Field
陈谭军
Karol Chrapek
Karol Chrapek
Matthew Mosesohn
Matthew Mosesohn
Wong Hoi Sing Edison
Spencer Smith
Justin Downing
Vincent Schwarzer
Matthew Mosesohn