Trac Ticket #497 - Escaped character cannot be used in the substring search filter
    
    https://fedorahosted.org/389/ticket/497
    
    Bug description: Previous commit de8fd7d0e596e4de885b4dda6bf5329469880c45
    for Ticket 328 introduced this bug.  Only a string format filter
    for logging needs to be escaped, but the above commit accidentally
    applied the escaped filter to the real filter.
    
    Fix description: This patch did undo the escape on the real filter.