Security update for libvirt

Open Source Vulnerabilities SUSE-SU-2019:0936-1

This update for libvirt provides the following fixes: Security issue fixed: - CVE-2019-3840: Fixed a null pointer dereference vulnerability in virJSONValueObjectHasKey function which could have resulted in a remote denial of service via the guest agent (bsc#1127458). Other issues addressed: - apparmor: reintroduce upstream lxc mount rules (bsc#1130129). - hook: encode incoming XML to UTF-8 before passing to lxml etree from string method (bsc#1123642). - supportconfig: collect rotated logs in /var/log/libvirt/* (bsc#1124667). - libxl: support Xen's max_grant_frames setting with maxGrantFrames attribute on the xenbus controller (bsc#1126325). - conf: added new 'xenbus' controller type - util: skip RDMA detection for non-PCI network devices (bsc#1112182). - qemu: don't use CAP_DAC_OVERRIDE capability if non-root (bsc#1125665). - qemu: fix issues related to restricted permissions on /dev/sev(bsc#1102604). - apparmor: add support for named profiles (bsc#1118952). - libxl: save current memory value after successful balloon (bsc#1120813). - apparmor: Fix ptrace rules. (bsc#1117058) - libxl: Add support for soft reset. (bsc#1081516) - libxl: Fix VM migration on busy hosts. (bsc#1108086) - qemu: Add support for SEV guests. (fate#325817) - util: Don't check for parallel iteration in hash-related functions. (bsc#1106420) - spec: Don't restart libvirt-guests when updating libvirt-client. (bsc#1104662) - Fix virNodeGetSEVInfo API crashing libvirtd on AMD SEV enabled hosts. (bsc#1108395)