scripts/lib/argparse_oe: also change 'positional arguments' to 'arguments'

This aligns with our existing 'optional arguments' to 'options' change, and
seems more intuitive for users.

(From OE-Core rev: 8a1cd471210e5fb77952f28172084bf6a4fb73e8)

Signed-off-by: Christopher Larson <chris_larson@mentor.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

scripts/lib/argparse_oe.py

@@ -14,6 +14,7 @@ class ArgumentParser(argparse.ArgumentParser):
         kwargs.setdefault('formatter_class', OeHelpFormatter)
         self._subparser_groups = OrderedDict()
         super(ArgumentParser, self).__init__(*args, **kwargs)
+        self._positionals.title = 'arguments'
         self._optionals.title = 'options'
 
     def error(self, message):