[nailgun] Nodes bond configuration is not cleared in all cases

[Aleksey Kasatkin]

fuel-web/master "5bc33457e5a1f108b071ed0ef2a771ea0b610b22"

Nodes bond configuration must be cleared when node is removed from cluster.
It's done when node is removed via node handlers but it's missing when node is removed via cluster handler.

NetworkManager.clear_bond_configuration()

It's present here:

https://github.com/stackforge/fuel-web/blob/master/nailgun/nailgun/objects/node.py#L617

but not here:

https://github.com/stackforge/fuel-web/blob/master/nailgun/nailgun/objects/cluster.py#L363

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/112922

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/112922
Committed: https://git.openstack.org/cgit/stackforge/fuel-web/commit/?id=7a0938f67c71466b24c79e4ea81fe34e203529b9
Submitter: Jenkins
Branch: master

commit 7a0938f67c71466b24c79e4ea81fe34e203529b9
Author: Aleksey Kasatkin <email address hidden>
Date: Fri Aug 8 18:05:39 2014 +0300

    Add clear_bond_configuration for removed nodes on cluster update

    Now bonds configuration is removed in all situations. Tests added.
    More generally, we need to DRY node removal code in those two places.

    Closes-Bug: #1354492

    Change-Id: I138df23b6a1da292ab928b59c479a1f3d7ba05a2