Ganeti prouds itself of its really good retro-compatibility and API stability.
Some of our users haven't upgraded their hardware in the last 2000 years (one
century more, one century less) and their Xen-PVM (Parchment and VelluM) does
not support Arabic numerals yet.

The already existing support for printing data in Roman numerals had fallen into
disrepair lately. This patch responds to the request of our most ancient users,
quickly delivered to us via the "cursus publicus", asking for this fundamental
functionality to be restored to its old splendour.

Signed-off-by: Michele Tartara <mtartara@google.com>
Reviewed-by: Klaus Aehlig <aehlig@google.com>