In Nova Compute API microversion 2.19, you can specify a “description”
attribute when creating, rebuilding, or updating a server instance. This
description can be retrieved by getting server details, or list details
for servers, this patch adds support for this attribute for instance in
horizon.
Change-Id: Ic9217234021d236aee8295915f1a9c3c544396b0
Implement-blueprint: support-description-for-instance