Working through node and group configuration via CLI

internal/app/wwctl/node/add/root.go

@@ -9,9 +9,11 @@ var (
 		Long:               "Add new node ",
 		RunE:				CobraRunE,
 	}
+	SetGroup string
 )
 
 func init() {
+	baseCmd.PersistentFlags().StringVarP(&SetGroup, "group", "g", "default", "Set group to add nodes to")
 }
 
 // GetRootCommand returns the root cobra.Command for the application.