wwctl image completions and arguments

Signed-off-by: Jonathon Anderson <janderson@ciq.com>

internal/app/wwctl/image/rename/main.go

@@ -11,10 +11,6 @@ import (
 )
 
 func CobraRunE(cmd *cobra.Command, args []string) (err error) {
-	if len(args) != 2 {
-		return fmt.Errorf("rename requires 2 arguments: %d provided", len(args))
-	}
-
 	crp := &wwapiv1.ImageRenameParameter{
 		ImageName:  args[0],
 		TargetName: args[1],