Add 'Shared NIC' term (r8,r7,r6,r5,dsR8,dsR7,dsR6)

Minor change to definition

Signed-off-by: Ron Stone <ronald.stone@windriver.com>
Change-Id: Id768601957513f4ceff0e1a81fd72f04e59a04d4

doc/source/introduction/terms.rst

@@ -185,3 +185,37 @@ commonly used in the |org| community and in this documentation.
      An instance of a node provided by software (a hypervisor), which runs
      within the host operating system and hardware.
 
+   Rollback 
+     The process of reverting changes made to a system or database to a
+     previous state. For |prod|, *Rollback* is a capability that is supported
+     during an upgrade or update.
+
+   Restore
+     Bringing back a system or data from a backup or a previously saved state.
+     For |prod|, *Restore* can be used for current release (*N*) or (*N*-1).
+
+   Downgrade
+     The process of moving from a higher version or a newer release of a
+     software, firmware, or operating system to a lower version or an older
+     release.
+
+   Precheck
+     A system state checks intended to confirm the system health for an
+     impending operation.  This check can be performed at any time prior to the
+     system operation execution, but is intended to be executed just prior to
+     confirming that it can be scheduled before actually attempting the operation.
+
+   Prestaging
+     System software media is prepopulated on the system in preparation for an
+     impending operation. *Prestaging* is currently supported for installation
+     and upgrade operation.
+
+   Preinstallation
+     New deployments for a system that is installed in the factory.
+     *Preinstallation* also refers to software media that is installed alongside
+     the existing deployment in preparation for an upgrade.
+
+   Shared NIC
+     A single physical port that can be shared by two or more system networks (oam, mgmt., 
+     cluster-host, pxeboot and data)
+     For more information, see :ref:`sriov-port-sharing`.