[PATCH] Add --root-device to upgrade command

[Alexander Todorov]

James Laska wrote:
> The removedAttrs allows us to define subclasses that deprecate or remove
> previous attributes.
> 
> Hope that helps!

Good explanation but I'm still not sure if I need this in the F11_Upgrade class 
which derives from the FC3_Upgrade class and only adds to it but doesn't remove.
I think I'm save with the patch but would like to hear from Chris Lumens if he's 
  OK with it as well.

--
Alexander.