Can't change the node->chassis OR port-> node association

[Lucas Alvares Gomes]

The way we change the relation of a port with a node OR a node with a chassis is by replacing the 'node_uuid' OR 'chassis_uuid' fields from Ports and Nodes respectively.

The API is failing to if you try to replace those fields, LOG:

[stack@localhost devstack]$ ironic node-update f0fd1ec8-47ad-4652-b4c9-46d19d8914d3 replace chassis_uuid=56bb1063-8ad2-4f29-b3fc-bcda9684e09a
Couldn't apply patch '[{'path': '/chassis_uuid', 'value': u'56bb1063-8ad2-4f29-b3fc-bcda9684e09a', 'op': 'replace'}]'. Reason: can't replace non-existent object 'chassis_uuid' (HTTP 400)

[stack@localhost devstack]$ ironic port-update 3551aa44-ed73-4fb7-969d-3b04cde2af25 replace node_uuid=f0fd1ec8-47ad-4652-b4c9-46d19d8914d3
Couldn't apply patch '[{'path': '/node_uuid', 'value': u'f0fd1ec8-47ad-4652-b4c9-46d19d8914d3', 'op': 'replace'}]'. Reason: can't replace non-existent object 'node_uuid' (HTTP 400)

Both 'chassis_uuid' and 'node_uuid' fields in the API are special, they _only_ exists in the API object and internally they get translated to their numerical ID.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/106083

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/106083
Committed: https://git.openstack.org/cgit/openstack/ironic/commit/?id=cfeab37f0a947122a2b012d61ba234cc25f52935
Submitter: Jenkins
Branch: master

commit cfeab37f0a947122a2b012d61ba234cc25f52935
Author: Lucas Alvares Gomes <email address hidden>
Date: Thu Jul 10 15:36:04 2014 +0100

    Fix node to chassis and port to node association

    This patch is fixing the Ironic API to allow "replace" (or "add" that
    acts like a replace on an existing field) the chassis_uuid field from
    nodes and the node_uuid field from ports.

    Closes-Bug: #1340196
    Change-Id: I89533bcd2e4ab0b1d453c4d9424e573b23703827