[type/__localedef] Blacklist OpenBSD and NetBSD

cdist/conf/type/__localedef/gencode-remote

@@ -127,6 +127,12 @@ in
 				;;
 		esac
 		;;
+	(netbsd|openbsd)
+		# NetBSD/OpenBSD are missing localedef(1).
+		# We also do not delete defined locales because they can't be recreated.
+		echo "${os} is lacking localedef(1). Locale management unavailable." >&2
+		exit 1
+		;;
 	(*)
 		echo "Your operating system (${os}) is currently not supported by this type (${__type##*/})." >&2
 		echo "Please contribute an implementation for it if you can." >&2