Fix the TLS Session ID cache
    
    At some point that I never noticed the way I was trying to
    determine whether the worker or prefork model was being used
    broke such that the reverse of what I intended was happening
    causing no session ID caching at all.
    
    My first crack at this fixed the query to be used which fixed
    the prefork model but the worker model was only caching about
    20% of requests. This is because it is a hybrid of
    forked/threading so still needs the MP cache.
    
    By configuring MP for all I now get the expected level of
    caching. I used the NSS tool strsclnt to confirm levels of
    caching.