Revert "Store GSSAPI session key in /var/run/ipa"
    
    This reverts commit 2bab2d4963daa99742875f3633a99966bc56f5a3. It was
    pointed out that apache has no access to /var/lib/ipa directory breaking
    the session handling.
    
    https://pagure.io/freeipa/issue/6880
    
    Reviewed-By: Simo Sorce <ssorce@redhat.com>