More updated excludes

 - Legacy-Id: 282

Author: levkowetz

test/pyflakes.exclude

@@ -1,6 +1,7 @@
 ietf/settings.py:149: 'from settings_local import *' used; unable to detect undefined names
 ietf/tests.py:8: redefinition of unused 'ietf' from line 7
 ietf/tests.py:10: redefinition of unused 'ietf' from line 9
+ietf/tests.py:16: redefinition of unused 'ietf' from line 15
 ietf/urls.py:1: 'handler500' imported but unused
 ietf/urls.py:1: 'handler404' imported but unused
 ietf/ipr/views.py:6: 'new' imported but unused