Fix Ganeti 2.17 sample configuration
Fix Ganeti 2.17 sample configuration

Add missing fields diagnose, diagnose_data_collector_filename and
maintenance.

Signed-off-by: Lisa Velden <f95ae155456787aef400a49db463a62bbef84ead@google.com>
Reviewed-by: Helga Velroyen <2d0126b1ec6f9ec5cbec4a7012aa14faeaef10f5@google.com>

mbakke/ganeti,onponomarev/ganeti,leshchevds/ganeti,mbakke/ganeti,ganeti/ganeti,onponomarev/ganeti,andir/ganeti,mbakke/ganeti,leshchevds/ganeti,andir/ganeti,andir/ganeti,leshchevds/ganeti,ganeti/ganeti,ganeti/ganeti