Sandbox: vmImage preparation

Sandbox normally will need a clean snapshot of vmImage.

If you are using qemu/kvm, this is how to create snapshot

1) run the guest, make sure evertyhing works

    - network ok 

    - - - can go to internet, 

    - - -  can communicate to sandbox manager(can ping to sandbox mgr)

    - - -  sandbox mgr can ping to vmImage

    - agent already running

2) create snapshot:

     $ virsh snapshot-create-as --domain <vm_image>  --name <snapshot_name>

3) to verified your snapshot is working

   -  shutdown the guest

          $  virsh shutdown <vm_image>

           or  virsh destroy <vm_image>

   -  revert to snapshot

           $ virsh snapshot-revert <vm_image> <snapshot_name>