test if rpmdb can read /etc/resolv.conf symlink
    
    The rpmdb process executed by the rpmdb-rebuild service wants to
    read the /etc/resolv.conf symlink, but SELinux denies that access,
    because SELinux policy does not allow that. This TC is able to
    reproduce the issue.
    
    I believe this issue should be fixed in selinux-policy component
    via appropriate allow rule.
    
    The TC covers BZ#1898298.