* Added support for backup

EME-13

Change-Id: I11cabb77bb66f3e9f1e35c9a00c9c196ded0ceb3

salt custom py module seedng.py should use the same Salt version
when preinstalling minion for salt-controlled VMs via bootstrap
script.

Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

Change-Id: I772495c38ed5dc21ad833f3c0f351384942e2b23

Do not change VCP disk profile globally, it causes to re-use
the properties from one node in another.

Change-Id: Iff98010c32c1060b50bc0ae040edb72108c57da1

Example:

parameters:
  salt:
    control:
      size: #RAM 4096,8192,16384,32768,65536
        openstack.control:
          cpu: 8
          ram: 32768
          disk_profile: small_two_disks
          net_profile: default

  virt:
    disk:
      small_two_disks:
        - system:
            size: 50000
            image: http:/path/to/image.qcow2
        - cinder-volume:
            size: 50000

Change-Id: Ie092b77627cb2b1d36ba4b7a2a7d749ad91881c8

Change-Id: I8fe09f450695eaad1546262cef8df5bc4bb02308

Change-Id: Ifac3f5e03099e8190db0a3af62a7be1f762f87be

Change-Id: Ic40eeb417175dff9f22fb4c34509b4c495cb5c36