Explicitly enforce the number or arguments accepted by some wwctl subcommands. #1717

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

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

@@ -13,6 +13,7 @@ var (
 		Long:                  "This command exports the given nodes as yaml to stdout.",
 		RunE:                  CobraRunE,
 		ValidArgsFunction:     completions.Nodes,
+		Args:                  cobra.ArbitraryArgs,
 	}
 	NoHeader bool
 )