Fix typo in pypi upload job.

Change-Id: I846df0c5476046fb1dd5af0d012bd14b5f79a1c4
Reviewed-on: https://review.openstack.org/19666
Approved: James E. Blair <corvus@inaugust.com>
Reviewed-by: James E. Blair <corvus@inaugust.com>
Tested-by: Jenkins