libvirt security and bug fix update

[3.9.0-14.el7_5.4]

• lxc: Drop useless check in live device update (rhbz#1557922)
• Pass oldDev to virDomainDefCompatibleDevice on device update (rhbz#1557922)
• qemu: Fix updating device with boot order (rhbz#1557922)
• conf: Fix crash in virDomainDefCompatibleDevice (rhbz#1557922)
• vmx: check for present/enabled devices earlier (rhbz#1566524)
• vmx: allocate space for network interfaces if needed (rhbz#1566524)
• internal: add STRCASEPREFIX (rhbz#1566524)
• vmx: convert any amount of NICs (rhbz#1566524)
• qemu: Use dynamic buffer for storing PTY aliases (rhbz#1566525)
• qemu: avoid denial of service reading from QEMU monitor (CVE-2018-5748) (CVE-2018-5748)
• qemu: avoid denial of service reading from QEMU guest agent (CVE-2018-1064) (CVE-2018-1064)
  [3.9.0-14.el7_5.3]
• qemu_cgroup: Fix ‘rc’ argument on virDomainAuditCgroupPath() calls (rhbz#1564996)
• util: Introduce virStringListMerge (rhbz#1564996)
• util: Introduce virDevMapperGetTargets (rhbz#1564996)
• qemu_cgroup: Handle device mapper targets properly (rhbz#1564996)