KnownControllers indicate the default controller we are known.

NewCloudControllerManagerCommand creates a *cobra.Command object with default parameters.

Run runs the ExternalCMServer.

ConfigzName is the name used for register cloud-controller manager /configz, same with GroupName.

ControllerStartJitter is the jitter value used when starting controller managers.

ControllersDisabledByDefault is the controller disabled default when starting cloud-controller managers.