SUSE-SU-2020:3039-1 Security update for libvirt

This update for libvirt fixes the following issues: - CVE-2020-15708: Added a note to libvirtd.conf about polkit auth in SUSE distros bsc1174955. - CVE-2020-25637: Fixed a double free in qemuAgentGetInterfaces bsc1177155. - qemu: Adjust max memlock on mdev hotplug bsc1177480. - Xen: Don't add dom...