test if systemd-timesyncd can watch the / directory
    
    Recent testing revealed, that systemd-timesyncd service wants to
    use the inotify_add_watch syscall on the root directory during boot.
    Unfortunately, SELinux policy denies that access.
    I believe that the access is harmless and should be allowed.
    The TC looks for appropriate policy rule.
    
    The TC covers BZ#1949315.