Changed the xml parser settings for legacy xml draft submissions to remove comments before converting to .txt. Fixes and issue with comments in <artwork> text.

 - Legacy-Id: 17297

Author: levkowetz

ietf/submit/forms.py

@@ -241,6 +241,8 @@ def format_messages(where, e, log):
                     file_name['txt'] = os.path.join(settings.IDSUBMIT_STAGING_PATH, '%s-%s.txt' % (self.filename, self.revision))
                     try:
                         if xml_version != '3':
+                            self.xmltree = parser.parse(remove_comments=True, quiet=True)
+                            self.xmlroot = self.xmltree.getroot()
                             pagedwriter = xml2rfc.PaginatedTextRfcWriter(self.xmltree, quiet=True)
                             pagedwriter.write(file_name['txt'])
                         else: