[RFE] API for dynamic lookup attributes

[Sam Betts]

Currently we look up nodes using only BMC and MAC addresses. We should allow users to add more to this list. Initial proposal was to create a new plugin interface, but it may be an overkill for now.

The following JSON structure will be used for attributes:

 {
   "field": "JSON path to a field in data",
   "node_field": "path to field in ironic database",
   "op": "operation"
 }

Here "op" is the same as in rules API.
New API collection /v1/lookup/attributes will be created to store lookup attributes.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/421285
Committed: https://git.openstack.org/cgit/openstack/ironic-inspector/commit/?id=0ce5cdb7c8344e981a919aab136c4c2eba79d4a2
Submitter: Jenkins
Branch: master

commit 0ce5cdb7c8344e981a919aab136c4c2eba79d4a2
Author: dparalen <email address hidden>
Date: Mon Jan 16 18:55:08 2017 +0100

    Find a node by multiple attributes

    This patch modifies current attributes matching from a single
    name-value->node hit to a best-match score.

    Also using an UUID as the attributes table primary key to allow exposing
    attributes in API later (bug 1525231).

    Change-Id: I205e31652b21b9e030b9530149e533b29c52a387
    Closes-Bug: 1651719
    Partial-Bug: 1525231

[Iury Gregory Melo Ferreira (iurygregory)]

Fix Released - the patches have been merged (a while ago)