Ganeti 2.9 design

The following design documents have been implemented in Ganeti 2.9.

• HRoller tool
• Partitioned Ganeti
• Ganeti monitoring agent
• Ganeti reason trail
• Splitting the query and job execution paths
• Design for adding UUID and name to devices

The following designs have been partially implemented in Ganeti 2.9.

• Management of storage types and disk templates, incl. storage space reporting