-k command line argument is not being handled properly

[yuriiz]

./manage.py test -h with django-nose says this argument should be accepted:
-k, --keepdb Preserves the test DB between runs.
However only long version of it seems to work.
Passing -k results in:

$ bin/python manage.py test -k
nosetests -k --verbosity=1
Usage: manage.py [options]

manage.py: error: no such option: -k

It seems -k is being wrongly passed to nosetests which do not accept it.
Please make behaviour consistent with manage.py test --help and handle short version of --keepdb work too.
Tested with latest version from PyPi (django-nose==1.4.5)