Comment 2 for bug 1420445

Reviewed: https://review.openstack.org/160772
Committed: https://git.openstack.org/cgit/openstack/python-barbicanclient/commit/?id=8c9024337c67f2dbf1a851f12209cb6bdf6f1e7c
Submitter: Jenkins
Branch: master

commit 8c9024337c67f2dbf1a851f12209cb6bdf6f1e7c
Author: Juan Antonio Osorio Robles <email address hidden>
Date: Tue Mar 3 14:30:41 2015 +0200

    Do not filter empty strings

    Empty strings shouldn't be filtered from requests, as we have
    explicitly set some attributes to be optional and actually
    differentiate between null and empty attributes in the server side. So
    now, only attributes containing None are filtered and empty strings
    are actually passed to the server.

    Change-Id: Ia048d7de6bcbc12317930eeccc009b6b0db10e13
    Closes-bug: #1420445