'./manage test --liveserver=foo' fails in projects that use django-test-extras and Django 1.8

[frankoid]

For example, in djemplate with Django==1.8.4 and django-test-extras==2.0.1:

(djemplate)francis@murr djemplate $ ./manage test --liveserver=localhost:8100-8999
Usage: /Users/francis/Code/Bright/python/djemplate/project/manage.py test [options] 

Discover and run tests in the specified modules or the current directory.

/Users/francis/Code/Bright/python/djemplate/project/manage.py: error: no such option: --liveserver
(djemplate)francis@murr djemplate $ 

I think that this is because django-test-extras relies on the built in test command's option_list and that was changed to an empty tuple when optparse was replaced by argparse in django/django@8568638