This will allow distributions to install the file as text documentation.

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

This patch formats the upgrade notes currently in the wiki[1] as reST
and adds them to the documentation.

[1] http://code.google.com/p/ganeti/wiki/UpgradeNotes



Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>