Important: virt:ol security update (Oracle Linux 8)

libguestfs
[1:1.38.4-10.1.0.1]
- Config supermin to use host yum.conf in ol8 [Orabug: 29319324]
- Set DISTRO_ORACLE_LINUX correspeonding to ol

[1:1.38.4-10.1]
- Fix inspection of partition-less devices
resolves: rhbz#1714747

libssh2
[1.8.0-7.el8_0.1]
- fix integer overflow in keyboard interactive handling that allows out-of-bounds writes (CVE-2019-3863)
- fix integer overflow in SSH packet processing channel resulting in out of bounds write (CVE-2019-3857)
- fix integer overflow in keyboard interactive handling resulting in out of bounds write (CVE-2019-3856)
- fix integer overflow in transport read resulting in out of bounds write (CVE-2019-3855)

libvirt
[4.5.0-23.3.0.1.el8]
- added librbd1 as dependency (Keshav Sharma)

[4.5.0-23.3.el8]
- api: disallow virDomainSaveImageGetXMLDesc on read-only connections (CVE-2019-10161)
- api: disallow virDomainManagedSaveDefineXML on read-only connections (CVE-2019-10166)
- api: disallow virConnectGetDomainCapabilities on read-only connections (CVE-2019-10167)
- api: disallow virConnect*HypervisorCPU on read-only connections (CVE-2019-10168)

qemu-kvm
[2.12.0-64.el8.0.0.2]
- Bump release version to fix the versioning problem (zstream release lower than ystream).
- Resolves: bz#1704545
(CVE-2018-12126 virt:rhel/qemu-kvm: hardware: Microarchitectural Store Buffer Data Sampling [rhel-8.0.0.z])