added ".txt" extensions to attached test reports for MUAs that do not handle

MIME correctly.


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@11622 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Type/tests/sendMailToList

@@ -64,11 +64,11 @@ file_content = file(
 
 mime_text = MIMEText(test_msg)
 mime_text.add_header('Content-Disposition', 'attachment',
-                     filename='test_output')
+                     filename='test_output.txt')
 msg.attach(mime_text)
 mime_text = MIMEText(file_content)
 mime_text.add_header('Content-Disposition', 'attachment',
-                     filename='test_full_output')
+                     filename='test_full_output.txt')
 msg.attach(mime_text)
 
 # Send the email via our own SMTP server.