Annotaion in rest create_user is confusing

[Wang Bo]

email is an optional argument, both '' and None could successfully create a new user with no email info. The difference is:
If email=None, the value will be NULL in db.
If email='', there is no value of email column in db.

Clear current annotation "# not sure why email is forced to None, but other code does it"

[Rob Cresswell (robcresswell-deactivatedaccount)]

Patch here: https://review.openstack.org/#/c/287704/

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/287704
Committed: https://git.openstack.org/cgit/openstack/horizon/commit/?id=16a471f6a7ca01016f18bcec0c11322eb77418c1
Submitter: Jenkins
Branch: master

commit 16a471f6a7ca01016f18bcec0c11322eb77418c1
Author: Bo Wang <email address hidden>
Date: Thu Mar 3 18:35:48 2016 +0800

    Clear confusing annotation in rest create_user

    email should be None if not provided, ref[1]

    [1] https://github.com/openstack/horizon/commit/
    311bbd7d16451e53775d316d0e45e1b47711c358

    Closes-Bug: #1553148
    Change-Id: I0530a78f3b354f06b2d9608f5da7ce31ea80085b

[Doug Hellmann (doug-hellmann)]

This issue was fixed in the openstack/horizon 10.0.0.0b2 development milestone.