Working through node and group configuration via CLI

internal/app/wwctl/group/list/root.go

@@ -9,9 +9,12 @@ var (
 		Long:               "List group configurations ",
 		RunE:				CobraRunE,
 	}
+	ShowAll bool
 )
 
 func init() {
+	baseCmd.PersistentFlags().BoolVarP(&ShowAll, "all", "a", false, "Show all node configurations")
+
 }
 
 // GetRootCommand returns the root cobra.Command for the application.