OCPNODE-3372: Update defaultRuntime doc to show options available and set default to crun

Author: ngopalak-redhat

machineconfiguration/v1/types.go

@@ -844,7 +844,8 @@ type ContainerRuntimeConfiguration struct {
 	// +optional
 	OverlaySize *resource.Quantity `json:"overlaySize,omitempty"`
 
-	// defaultRuntime is the name of the OCI runtime to be used as the default.
+	// defaultRuntime is the name of the OCI runtime to be used as the default for containers.
+	// Options are runc and crun. Defaults to crun
 	// +optional
 	DefaultRuntime ContainerRuntimeDefaultRuntime `json:"defaultRuntime,omitempty"`
 }
@@ -855,7 +856,7 @@ const (
 	ContainerRuntimeDefaultRuntimeEmpty   = ""
 	ContainerRuntimeDefaultRuntimeRunc    = "runc"
 	ContainerRuntimeDefaultRuntimeCrun    = "crun"
-	ContainerRuntimeDefaultRuntimeDefault = ContainerRuntimeDefaultRuntimeRunc
+	ContainerRuntimeDefaultRuntimeDefault = ContainerRuntimeDefaultRuntimeCrun
 )
 
 // ContainerRuntimeConfigStatus defines the observed state of a ContainerRuntimeConfig