node.target_raid_config cannot be unset

[Ramakrishnan G (rameshg87)]

Today, we preserve node.target_raid_config after RAID is created. Currently there is no way to unset node.target_raid_config if someone no longer wishes to have RAID configured on the node. Try to do the below gives InvalidParameterValue error.

curl -g -i -X PUT http://10.10.1.31:6385/v1/nodes/169f5a78-1405-405c-b9c7-c82b627a22fd/states/raid -H "X-OpenStack-Ironic-API-Version: latest" -H "Content-Type: application/json" -H "Accept: application/json" -H "X-Auth-Token: $AUTH_TOKEN" -d '{}'

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/226148

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/226148
Committed: https://git.openstack.org/cgit/openstack/ironic/commit/?id=d2afe204b7ae25eb8d20764fa9b400c4170ba94d
Submitter: Jenkins
Branch: master

commit d2afe204b7ae25eb8d20764fa9b400c4170ba94d
Author: Ramakrishnan G <email address hidden>
Date: Tue Sep 22 03:19:57 2015 +0000

    Allow unsetting node.target_raid_config

    Currently we have no mechanism to unset node.target_raid_config.
    This should be possible because operators may decide to stop
    using RAID on the bare metal after using it for a while.

    Change-Id: Ifdb2017827a7962d353ae69e9b4fb24144e19f8e
    Closes-Bug: 1498275