Update PCI passthrough and SR-IOV glossary entries.

PCI Passthrough and, as a result, SR-IOV are available from OpenStack
Havana onwards. As such the relevant glossary entries have been updated
to indicate that these previously unsupported virtualization
technologies are now supported.

https://blueprints.launchpad.net/nova/+spec/pci-passthrough-base
https://blueprints.launchpad.net/nova/+spec/pci-passthrough-libvirt

Change-Id: I7468f62465ef5eaccefbb5dd188571965f987b3d
Remove redundant installation of openstack-utils.

Fedora/RHEL installation of openstack-utils package was mentioned twice,
once in the messaging server command and once later after repository
configuration.

As only the second instance will actually work (as openstack-utils is
from the repository being configured) the first has been removed.

Change-Id: I19eda3b9c177649cbfb873922b776133ae32569b
Merge "Remove redundant installation of openstack-utils."
Merge "Update PCI passthrough and SR-IOV glossary entries."