Modified for sci version on ganeti-instance-debootstrap
port to wheezy with additional fixes:
* remove windows os scripts from postinst.sh
* add sci apt source to postinst.sh
* add udeb sci-finish-install with 70-sci-copy-netcfg hook to copy netcfg after standard nectfg hooks
* reduce swapspace to 1024MB in auto partitioning
* various small fixes
fix usbip in downloads
zabbix from backports
Switch to wheezy