Ticket #47596 attrcrypt fails to find unlocked key
    
    https://fedorahosted.org/389/ticket/47596
    Reviewed by: nkinder (Thanks!)
    Branch: master
    Fix Description: There should always be a pre-authenticated slot/token that
    has the servers cert and key.  Just loop through all of the slots that the
    server's cert is found on, and use the first one that is authenticated.
    Platforms tested: RHEL6 x86_64
    Flag Day: no
    Doc impact: no