Use absolute paths when trying to find certmonger request id.
    
    The value stored in certmonger is not guaranteed to be normalized
    nor is the value passed-in (could be a relative path and may or not
    contain trailing slash). We do direct string compares so they need
    to match exactly or we won't find the request.
    
    https://fedorahosted.org/freeipa/ticket/1942