virt:rhel and virt-devel:rhel bug fix update

Kernel-based Virtual Machine (KVM) offers a full virtualization solution for
Linux on numerous hardware platforms. The virt:rhel module contains packages
which provide user-space components used to run virtual machines using KVM. The
packages also provide APIs for managing and interacting with the virtualized
systems.

Bug fixes:

* while live-migrating many instances concurrently, libvirt sometimes return
internal error: migration was active, but no RAM info was set
* XML error: Invalid value for attribute 'speed' in element 'link': '(null)'.
* Networking receive/transmit_bytes metrics values are swapped

Modularity name: "virt"
Stream name: "rhel"