Comment 4 for bug 1566282

Reviewed: https://review.openstack.org/301878
Committed: https://git.openstack.org/cgit/openstack/keystone/commit/?id=3e5fca06c6b7dd6060721faa39428b133edd10f0
Submitter: Jenkins
Branch: stable/mitaka

commit 3e5fca06c6b7dd6060721faa39428b133edd10f0
Author: Boris Bobrov <email address hidden>
Date: Tue Apr 5 18:50:48 2016 +0300

    Update federated user display name with shadow_users_api

    When a user comes to the cloud for the first time, a shadow user is
    created. When the user authenticates again, this shadow user is
    fetched and returned. Before it is returned, its display name should
    be updated. But the call to update the display name fails because
    neither identity manager nor identity drivers have the required
    method. However, the required method exists in shadow_users_api.

    The issue was hidden because method shadow_federated_user was
    cached and while the cache lived, the user could authenticate.

    Use the method of shadow_user_api instead of identity_api to update
    federated user display name.

    Change-Id: I58e65bdf3a953f3ded485003939b81f908738e1e
    Closes-Bug: 1566282
    (cherry picked from commit 7ad4f8728cce354617b5facefe5076d65af311c6)