No volume info on nodes created via cli.

[Egor Kotko]

{"build_id": "2014-08-07_16-17-02", "ostf_sha": "e33390c275e225d648b36997460dc29b1a3c20ae", "build_number": "410", "auth_required": true, "api": "1.0", "nailgun_sha": "67c4f1c18ab0833175f6dc7f0f9c49c3eb722287", "production": "docker", "fuelmain_sha": "3d452c04345ca3b0ab0615661e8cf36e277c1d50", "astute_sha": "b52910642d6de941444901b0f20e95ebbcb2b2e9", "feature_groups": ["mirantis"], "release": "5.1", "fuellib_sha": "d699fc178559e98cfd7d53b58478b46553ffe39e"}

Steps to reproduce:
1. Setup master node
2. Create cluster Centos, HA, Ceph for images and volumes
3. Execute on master node:
#fuel node -s --env 3 --node-id=20 --role=compute

# fuel node --env 1 --node-id=20 --disk --download
Node attributes for disks were written to:
/root/node_20/disks.yaml
[root@fuelweb ~]# cat /root/node_20/disks.yaml
- extra: []
  id: disk/by-path/pci-0000:00:05.0-virtio-pci-virtio2
  name: vda
  size: 50700
  volumes: []
- extra: []
  id: disk/by-path/pci-0000:00:08.0-virtio-pci-virtio5
  name: vdb
  size: 50700
  volumes: []

Expected result:
Volume info should be present.
Actual result:
No volume is present in node according master

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/112861

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/112861
Committed: https://git.openstack.org/cgit/stackforge/fuel-web/commit/?id=3cbf60b5d06c2b180c7e9e560191573e934f0501
Submitter: Jenkins
Branch: master

commit 3cbf60b5d06c2b180c7e9e560191573e934f0501
Author: Kamil Sambor <email address hidden>
Date: Fri Aug 8 15:26:46 2014 +0200

    Changed NodeAssignmentHandler to only use a Node.update method

    * modified NodeAssignmentHandler
    * added test for checking volumes after node assignment

    Change-Id: I6bb994ae75d4acec713c7257e76566d3cd56dfde
    Closes-Bug: #1354047