Comment 13 for bug 1302106

Reviewed: https://review.openstack.org/85458
Committed: https://git.openstack.org/cgit/openstack/keystone/commit/?id=1d98235fc91e152fb2f6d7e47224b043154e37a2
Submitter: Jenkins
Branch: stable/havana

commit 1d98235fc91e152fb2f6d7e47224b043154e37a2
Author: Brant Knudson <email address hidden>
Date: Fri Apr 4 10:50:07 2014 -0500

    Fix invalid LDAP filter for user ID with comma

    The Keystone server would respond with a 500 error when configured
    to use the LDAP identity backend and a request is made to get a
    token for a user that has an ID with a comma. The response is like:

     Authorization Failed: An unexpected error prevented the server from
     fulfilling your request. {'desc': 'Bad search filter'} (HTTP 500)

    This is because the user DN wasn't properly escaped in the filter
    for the query to get the groups that the user is a member of.

    Closes-Bug: #1302106

    Change-Id: Ib4886e66af0e979fcf23a84bcd51b07034547cb9